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https://github.com/sheumann/hush.git
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sha256,sha512: new applets. +4.9kb
we will require sha256/512 code for new $5$ and $6$ style password hashes anyway, they are showing up already in people's /etc/passwd...
This commit is contained in:
Denis Vlasenko
parent
c028ec280a
commit
56dceb9b77
@ -509,6 +509,18 @@ config SHA1SUM
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help
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Compute and check SHA1 message digest
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config SHA256SUM
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bool "sha256sum"
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default n
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help
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Compute and check SHA256 message digest
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config SHA512SUM
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bool "sha512sum"
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default n
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help
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Compute and check SHA512 message digest
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config SLEEP
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bool "sleep"
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default n
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@ -8,7 +8,13 @@
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#include "libbb.h"
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typedef enum { HASH_SHA1, HASH_MD5 } hash_algo_t;
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typedef enum {
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/* 4th letter of applet_name is... */
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HASH_MD5 = 's', /* "md5>s<um" */
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HASH_SHA1 = '1',
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HASH_SHA256 = '2',
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HASH_SHA512 = '5',
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} hash_algo_t;
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#define FLAG_SILENT 1
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#define FLAG_CHECK 2
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@ -24,10 +30,12 @@ static unsigned char *hash_bin_to_hex(unsigned char *hash_value,
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return (unsigned char *)hex_value;
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}
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static uint8_t *hash_file(const char *filename, hash_algo_t hash_algo)
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static uint8_t *hash_file(const char *filename /*, hash_algo_t hash_algo*/)
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{
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int src_fd, hash_len, count;
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union _ctx_ {
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sha512_ctx_t sha512;
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sha256_ctx_t sha256;
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sha1_ctx_t sha1;
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md5_ctx_t md5;
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} context;
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@ -35,6 +43,7 @@ static uint8_t *hash_file(const char *filename, hash_algo_t hash_algo)
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RESERVE_CONFIG_UBUFFER(in_buf, 4096);
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void FAST_FUNC (*update)(const void*, size_t, void*);
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void FAST_FUNC (*final)(void*, void*);
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hash_algo_t hash_algo = applet_name[3];
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src_fd = open_or_warn_stdin(filename);
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if (src_fd < 0) {
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@ -52,6 +61,16 @@ static uint8_t *hash_file(const char *filename, hash_algo_t hash_algo)
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update = (void*)sha1_hash;
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final = (void*)sha1_end;
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hash_len = 20;
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} else if (ENABLE_SHA256SUM && hash_algo == HASH_SHA256) {
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sha256_begin(&context.sha256);
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update = (void*)sha256_hash;
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final = (void*)sha256_end;
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hash_len = 32;
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} else if (ENABLE_SHA512SUM && hash_algo == HASH_SHA512) {
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sha512_begin(&context.sha512);
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update = (void*)sha512_hash;
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final = (void*)sha512_end;
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hash_len = 64;
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} else {
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bb_error_msg_and_die("algorithm not supported");
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}
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@ -80,9 +99,7 @@ int md5_sha1_sum_main(int argc UNUSED_PARAM, char **argv)
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int return_value = EXIT_SUCCESS;
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uint8_t *hash_value;
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unsigned flags;
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hash_algo_t hash_algo = ENABLE_MD5SUM
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? (ENABLE_SHA1SUM ? (applet_name[0] == 'm' ? HASH_MD5 : HASH_SHA1) : HASH_MD5)
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: HASH_SHA1;
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/*hash_algo_t hash_algo = applet_name[3];*/
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if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK)
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flags = getopt32(argv, "scw");
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@ -136,7 +153,7 @@ int md5_sha1_sum_main(int argc UNUSED_PARAM, char **argv)
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*filename_ptr = '\0';
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filename_ptr += 2;
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hash_value = hash_file(filename_ptr, hash_algo);
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hash_value = hash_file(filename_ptr /*, hash_algo*/);
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if (hash_value && (strcmp((char*)hash_value, line) == 0)) {
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if (!(flags & FLAG_SILENT))
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@ -162,7 +179,7 @@ int md5_sha1_sum_main(int argc UNUSED_PARAM, char **argv)
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*/
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} else {
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do {
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hash_value = hash_file(*argv, hash_algo);
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hash_value = hash_file(*argv/*, hash_algo*/);
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if (hash_value == NULL) {
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return_value = EXIT_FAILURE;
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} else {
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@ -334,6 +334,8 @@ USE_FEATURE_SH_IS_ASH(APPLET_ODDNAME(sh, ash, _BB_DIR_BIN, _BB_SUID_NEVER, sh))
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USE_FEATURE_SH_IS_HUSH(APPLET_ODDNAME(sh, hush, _BB_DIR_BIN, _BB_SUID_NEVER, sh))
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USE_FEATURE_SH_IS_MSH(APPLET_ODDNAME(sh, msh, _BB_DIR_BIN, _BB_SUID_NEVER, sh))
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USE_SHA1SUM(APPLET_ODDNAME(sha1sum, md5_sha1_sum, _BB_DIR_USR_BIN, _BB_SUID_NEVER, sha1sum))
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USE_SHA256SUM(APPLET_ODDNAME(sha256sum, md5_sha1_sum, _BB_DIR_USR_BIN, _BB_SUID_NEVER, sha256sum))
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USE_SHA512SUM(APPLET_ODDNAME(sha512sum, md5_sha1_sum, _BB_DIR_USR_BIN, _BB_SUID_NEVER, sha512sum))
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USE_SHOWKEY(APPLET(showkey, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
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USE_SLATTACH(APPLET(slattach, _BB_DIR_SBIN, _BB_SUID_NEVER))
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USE_SLEEP(APPLET_NOFORK(sleep, sleep, _BB_DIR_BIN, _BB_SUID_NEVER, sleep))
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@ -1310,7 +1310,24 @@ typedef struct sha1_ctx_t {
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void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC;
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void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx) FAST_FUNC;
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void *sha1_end(void *resbuf, sha1_ctx_t *ctx) FAST_FUNC;
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typedef struct sha256_ctx_t {
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uint32_t H[8];
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uint32_t total[2]; /* rename to "count"? */
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uint32_t buflen;
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char buffer[128]; /* NB: always correctly aligned for uint32_t */
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} sha256_ctx_t;
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void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC;
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void sha256_hash(const void *buffer, size_t len, sha256_ctx_t *ctx) FAST_FUNC;
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void* sha256_end(void *resbuf, sha256_ctx_t *ctx) FAST_FUNC;
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typedef struct sha512_ctx_t {
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uint64_t H[8];
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uint64_t total[2];
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uint64_t buflen;
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char buffer[256]; /* NB: always correctly aligned for uint64_t */
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} sha512_ctx_t;
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void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC;
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void sha512_hash(const void *buffer, size_t len, sha512_ctx_t *ctx) FAST_FUNC;
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void* sha512_end(void *resbuf, sha512_ctx_t *ctx) FAST_FUNC;
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typedef struct md5_ctx_t {
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uint32_t A;
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uint32_t B;
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@ -2404,9 +2404,10 @@
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"Print" USE_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " MD5 checksums" \
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USE_FEATURE_MD5_SHA1_SUM_CHECK( "\n" \
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"\nOptions:" \
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"\n -c Check MD5 sums against given list" \
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"\n -c Check sums against given list" \
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"\n -s Don't output anything, status code shows success" \
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"\n -w Warn about improperly formatted MD5 checksum lines") \
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"\n -w Warn about improperly formatted checksum lines" \
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)
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#define md5sum_example_usage \
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"$ md5sum < busybox\n" \
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@ -2418,6 +2419,42 @@
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"busybox: OK\n" \
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"^D\n"
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#define sha1sum_trivial_usage \
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"[OPTION] [FILEs...]" \
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USE_FEATURE_MD5_SHA1_SUM_CHECK("\n or: sha1sum [OPTION] -c [FILE]")
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#define sha1sum_full_usage "\n\n" \
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"Print" USE_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA1 checksums." \
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USE_FEATURE_MD5_SHA1_SUM_CHECK( "\n" \
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"\nOptions:" \
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"\n -c Check sums against given list" \
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"\n -s Don't output anything, status code shows success" \
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"\n -w Warn about improperly formatted checksum lines" \
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)
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#define sha256sum_trivial_usage \
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"[OPTION] [FILEs...]" \
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USE_FEATURE_MD5_SHA1_SUM_CHECK("\n or: sha256sum [OPTION] -c [FILE]")
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#define sha256sum_full_usage "\n\n" \
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"Print" USE_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA1 checksums." \
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USE_FEATURE_MD5_SHA1_SUM_CHECK( "\n" \
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"\nOptions:" \
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"\n -c Check sums against given list" \
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"\n -s Don't output anything, status code shows success" \
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"\n -w Warn about improperly formatted checksum lines" \
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)
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#define sha512sum_trivial_usage \
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"[OPTION] [FILEs...]" \
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USE_FEATURE_MD5_SHA1_SUM_CHECK("\n or: sha512sum [OPTION] -c [FILE]")
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#define sha512sum_full_usage "\n\n" \
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"Print" USE_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA1 checksums." \
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USE_FEATURE_MD5_SHA1_SUM_CHECK( "\n" \
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"\nOptions:" \
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"\n -c Check sums against given list" \
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"\n -s Don't output anything, status code shows success" \
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"\n -w Warn about improperly formatted checksum lines" \
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)
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#define mdev_trivial_usage \
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"[-s]"
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#define mdev_full_usage "\n\n" \
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@ -3659,18 +3696,6 @@
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"\n -f file Read from file instead of /var/log/wtmp" \
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)
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#define sha1sum_trivial_usage \
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"[OPTION] [FILEs...]" \
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USE_FEATURE_MD5_SHA1_SUM_CHECK("\n or: sha1sum [OPTION] -c [FILE]")
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#define sha1sum_full_usage "\n\n" \
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"Print" USE_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA1 checksums." \
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USE_FEATURE_MD5_SHA1_SUM_CHECK( "\n" \
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"\nOptions:" \
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"\n -c Check SHA1 sums against given list" \
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"\n -s Don't output anything, status code shows success" \
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"\n -w Warn about improperly formatted SHA1 checksum lines" \
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)
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#define showkey_trivial_usage \
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"[-a | -k | -s]"
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#define showkey_full_usage "\n\n" \
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548
libbb/sha1.c
548
libbb/sha1.c
@ -14,30 +14,44 @@
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*
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* This is a byte oriented version of SHA1 that operates on arrays of bytes
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* stored in memory. It runs at 22 cycles per byte on a Pentium P4 processor
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*
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* ---------------------------------------------------------------------------
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*
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* SHA256 and SHA512 parts are:
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* Released into the Public Domain by Ulrich Drepper <drepper@redhat.com>.
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* TODO: shrink them.
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*/
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#include "libbb.h"
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#define rotl32(x,n) (((x) << (n)) | ((x) >> (32 - (n))))
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#define rotr32(x,n) (((x) >> (n)) | ((x) << (32 - (n))))
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/* for sha512: */
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#define rotr64(x,n) (((x) >> (n)) | ((x) << (64 - (n))))
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#if BB_LITTLE_ENDIAN
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static inline uint64_t hton64(uint64_t v)
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{
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return (((uint64_t)htonl(v)) << 32) | htonl(v >> 32);
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}
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#else
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#define hton64(v) (v)
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#endif
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#define ntoh64(v) hton64(v)
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/* To check alignment gcc has an appropriate operator. Other
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compilers don't. */
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#if defined(__GNUC__) && __GNUC__ >= 2
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# define UNALIGNED_P(p,type) (((uintptr_t) p) % __alignof__(type) != 0)
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#else
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# define UNALIGNED_P(p,type) (((uintptr_t) p) % sizeof(type) != 0)
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#endif
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#define SHA1_BLOCK_SIZE 64
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#define SHA1_DIGEST_SIZE 20
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#define SHA1_HASH_SIZE SHA1_DIGEST_SIZE
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#define SHA1_MASK (SHA1_BLOCK_SIZE - 1)
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#define rotl32(x,n) (((x) << n) | ((x) >> (32 - n)))
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/* Reverse byte order in 32-bit words */
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#define ch(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
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#define parity(x,y,z) ((x) ^ (y) ^ (z))
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#define maj(x,y,z) (((x) & (y)) | ((z) & ((x) | (y))))
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/* A normal version as set out in the FIPS. This version uses */
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/* partial loop unrolling and is optimised for the Pentium 4 */
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#define rnd(f,k) \
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do { \
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t = a; a = rotl32(a,5) + f(b,c,d) + e + k + w[i]; \
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e = d; d = c; c = rotl32(b, 30); b = t; \
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} while (0)
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static void sha1_compile(sha1_ctx_t *ctx)
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{
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uint32_t w[80], i, a, b, c, d, e, t;
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@ -46,10 +60,12 @@ static void sha1_compile(sha1_ctx_t *ctx)
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/* words in big-endian order so an order reversal is needed */
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/* here on little endian machines */
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for (i = 0; i < SHA1_BLOCK_SIZE / 4; ++i)
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w[i] = htonl(ctx->wbuf[i]);
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w[i] = ntohl(ctx->wbuf[i]);
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for (i = SHA1_BLOCK_SIZE / 4; i < 80; ++i)
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w[i] = rotl32(w[i - 3] ^ w[i - 8] ^ w[i - 14] ^ w[i - 16], 1);
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for (/*i = SHA1_BLOCK_SIZE / 4*/; i < 80; ++i) {
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t = w[i - 3] ^ w[i - 8] ^ w[i - 14] ^ w[i - 16];
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w[i] = rotl32(t, 1);
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}
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a = ctx->hash[0];
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b = ctx->hash[1];
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@ -57,6 +73,18 @@ static void sha1_compile(sha1_ctx_t *ctx)
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d = ctx->hash[3];
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e = ctx->hash[4];
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/* Reverse byte order in 32-bit words */
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#define ch(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
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#define parity(x,y,z) ((x) ^ (y) ^ (z))
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#define maj(x,y,z) (((x) & (y)) | ((z) & ((x) | (y))))
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/* A normal version as set out in the FIPS. This version uses */
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/* partial loop unrolling and is optimised for the Pentium 4 */
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#define rnd(f,k) \
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do { \
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t = a; a = rotl32(a,5) + f(b,c,d) + e + k + w[i]; \
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e = d; d = c; c = rotl32(b, 30); b = t; \
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} while (0)
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for (i = 0; i < 20; ++i)
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rnd(ch, 0x5a827999);
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@ -68,6 +96,10 @@ static void sha1_compile(sha1_ctx_t *ctx)
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for (i = 60; i < 80; ++i)
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rnd(parity, 0xca62c1d6);
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#undef ch
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#undef parity
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#undef maj
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#undef rnd
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ctx->hash[0] += a;
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ctx->hash[1] += b;
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@ -76,6 +108,261 @@ static void sha1_compile(sha1_ctx_t *ctx)
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ctx->hash[4] += e;
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}
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/* Process LEN bytes of BUFFER, accumulating context into CTX.
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It is assumed that LEN % 64 == 0. */
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static void sha256_process_block(const void *buffer, size_t len, sha256_ctx_t *ctx)
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{
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/* Constants for SHA256 from FIPS 180-2:4.2.2. */
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static const uint32_t K[64] = {
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0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
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0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
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0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
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0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
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0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
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0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
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0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
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0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
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0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
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0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
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0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
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0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
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0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
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0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
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0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
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0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
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};
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const uint32_t *words = buffer;
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size_t nwords = len / sizeof(uint32_t);
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uint32_t a = ctx->H[0];
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uint32_t b = ctx->H[1];
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uint32_t c = ctx->H[2];
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uint32_t d = ctx->H[3];
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uint32_t e = ctx->H[4];
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uint32_t f = ctx->H[5];
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uint32_t g = ctx->H[6];
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uint32_t h = ctx->H[7];
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/* First increment the byte count. FIPS 180-2 specifies the possible
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length of the file up to 2^64 bits. Here we only compute the
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number of bytes. Do a double word increment. */
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ctx->total[0] += len;
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if (ctx->total[0] < len)
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ctx->total[1]++;
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/* Process all bytes in the buffer with 64 bytes in each round of
|
||||
the loop. */
|
||||
while (nwords > 0) {
|
||||
uint32_t W[64];
|
||||
uint32_t a_save = a;
|
||||
uint32_t b_save = b;
|
||||
uint32_t c_save = c;
|
||||
uint32_t d_save = d;
|
||||
uint32_t e_save = e;
|
||||
uint32_t f_save = f;
|
||||
uint32_t g_save = g;
|
||||
uint32_t h_save = h;
|
||||
|
||||
/* Operators defined in FIPS 180-2:4.1.2. */
|
||||
#define Ch(x, y, z) ((x & y) ^ (~x & z))
|
||||
#define Maj(x, y, z) ((x & y) ^ (x & z) ^ (y & z))
|
||||
#define S0(x) (rotr32(x, 2) ^ rotr32(x, 13) ^ rotr32(x, 22))
|
||||
#define S1(x) (rotr32(x, 6) ^ rotr32(x, 11) ^ rotr32(x, 25))
|
||||
#define R0(x) (rotr32(x, 7) ^ rotr32(x, 18) ^ (x >> 3))
|
||||
#define R1(x) (rotr32(x, 17) ^ rotr32(x, 19) ^ (x >> 10))
|
||||
|
||||
/* Compute the message schedule according to FIPS 180-2:6.2.2 step 2. */
|
||||
for (unsigned t = 0; t < 16; ++t) {
|
||||
W[t] = ntohl(*words);
|
||||
++words;
|
||||
}
|
||||
for (unsigned t = 16; t < 64; ++t)
|
||||
W[t] = R1(W[t - 2]) + W[t - 7] + R0(W[t - 15]) + W[t - 16];
|
||||
|
||||
/* The actual computation according to FIPS 180-2:6.2.2 step 3. */
|
||||
for (unsigned t = 0; t < 64; ++t) {
|
||||
uint32_t T1 = h + S1(e) + Ch(e, f, g) + K[t] + W[t];
|
||||
uint32_t T2 = S0(a) + Maj(a, b, c);
|
||||
h = g;
|
||||
g = f;
|
||||
f = e;
|
||||
e = d + T1;
|
||||
d = c;
|
||||
c = b;
|
||||
b = a;
|
||||
a = T1 + T2;
|
||||
}
|
||||
#undef Ch
|
||||
#undef Maj
|
||||
#undef S0
|
||||
#undef S1
|
||||
#undef R0
|
||||
#undef R1
|
||||
/* Add the starting values of the context according to FIPS 180-2:6.2.2
|
||||
step 4. */
|
||||
a += a_save;
|
||||
b += b_save;
|
||||
c += c_save;
|
||||
d += d_save;
|
||||
e += e_save;
|
||||
f += f_save;
|
||||
g += g_save;
|
||||
h += h_save;
|
||||
|
||||
/* Prepare for the next round. */
|
||||
nwords -= 16;
|
||||
}
|
||||
|
||||
/* Put checksum in context given as argument. */
|
||||
ctx->H[0] = a;
|
||||
ctx->H[1] = b;
|
||||
ctx->H[2] = c;
|
||||
ctx->H[3] = d;
|
||||
ctx->H[4] = e;
|
||||
ctx->H[5] = f;
|
||||
ctx->H[6] = g;
|
||||
ctx->H[7] = h;
|
||||
}
|
||||
|
||||
/* Process LEN bytes of BUFFER, accumulating context into CTX.
|
||||
It is assumed that LEN % 128 == 0. */
|
||||
static void sha512_process_block(const void *buffer, size_t len, sha512_ctx_t *ctx)
|
||||
{
|
||||
/* Constants for SHA512 from FIPS 180-2:4.2.3. */
|
||||
static const uint64_t K[80] = {
|
||||
0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
|
||||
0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
|
||||
0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
|
||||
0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
|
||||
0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
|
||||
0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
|
||||
0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
|
||||
0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
|
||||
0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
|
||||
0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
|
||||
0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
|
||||
0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
|
||||
0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
|
||||
0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
|
||||
0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
|
||||
0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
|
||||
0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
|
||||
0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
|
||||
0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
|
||||
0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
|
||||
0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
|
||||
0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
|
||||
0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
|
||||
0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
|
||||
0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
|
||||
0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
|
||||
0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
|
||||
0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
|
||||
0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
|
||||
0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
|
||||
0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
|
||||
0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
|
||||
0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
|
||||
0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
|
||||
0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
|
||||
0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
|
||||
0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
|
||||
0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
|
||||
0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
|
||||
0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL,
|
||||
};
|
||||
const uint64_t *words = buffer;
|
||||
size_t nwords = len / sizeof(uint64_t);
|
||||
uint64_t a = ctx->H[0];
|
||||
uint64_t b = ctx->H[1];
|
||||
uint64_t c = ctx->H[2];
|
||||
uint64_t d = ctx->H[3];
|
||||
uint64_t e = ctx->H[4];
|
||||
uint64_t f = ctx->H[5];
|
||||
uint64_t g = ctx->H[6];
|
||||
uint64_t h = ctx->H[7];
|
||||
|
||||
/* First increment the byte count. FIPS 180-2 specifies the possible
|
||||
length of the file up to 2^128 bits. Here we only compute the
|
||||
number of bytes. Do a double word increment. */
|
||||
ctx->total[0] += len;
|
||||
if (ctx->total[0] < len)
|
||||
ctx->total[1]++;
|
||||
|
||||
/* Process all bytes in the buffer with 128 bytes in each round of
|
||||
the loop. */
|
||||
while (nwords > 0) {
|
||||
uint64_t W[80];
|
||||
uint64_t a_save = a;
|
||||
uint64_t b_save = b;
|
||||
uint64_t c_save = c;
|
||||
uint64_t d_save = d;
|
||||
uint64_t e_save = e;
|
||||
uint64_t f_save = f;
|
||||
uint64_t g_save = g;
|
||||
uint64_t h_save = h;
|
||||
|
||||
/* Operators defined in FIPS 180-2:4.1.2. */
|
||||
#define Ch(x, y, z) ((x & y) ^ (~x & z))
|
||||
#define Maj(x, y, z) ((x & y) ^ (x & z) ^ (y & z))
|
||||
#define S0(x) (rotr64(x, 28) ^ rotr64(x, 34) ^ rotr64(x, 39))
|
||||
#define S1(x) (rotr64(x, 14) ^ rotr64(x, 18) ^ rotr64(x, 41))
|
||||
#define R0(x) (rotr64(x, 1) ^ rotr64(x, 8) ^ (x >> 7))
|
||||
#define R1(x) (rotr64(x, 19) ^ rotr64(x, 61) ^ (x >> 6))
|
||||
|
||||
/* Compute the message schedule according to FIPS 180-2:6.3.2 step 2. */
|
||||
for (unsigned t = 0; t < 16; ++t) {
|
||||
W[t] = ntoh64(*words);
|
||||
++words;
|
||||
}
|
||||
for (unsigned t = 16; t < 80; ++t)
|
||||
W[t] = R1(W[t - 2]) + W[t - 7] + R0(W[t - 15]) + W[t - 16];
|
||||
|
||||
/* The actual computation according to FIPS 180-2:6.3.2 step 3. */
|
||||
for (unsigned t = 0; t < 80; ++t) {
|
||||
uint64_t T1 = h + S1(e) + Ch(e, f, g) + K[t] + W[t];
|
||||
uint64_t T2 = S0(a) + Maj(a, b, c);
|
||||
h = g;
|
||||
g = f;
|
||||
f = e;
|
||||
e = d + T1;
|
||||
d = c;
|
||||
c = b;
|
||||
b = a;
|
||||
a = T1 + T2;
|
||||
}
|
||||
#undef Ch
|
||||
#undef Maj
|
||||
#undef S0
|
||||
#undef S1
|
||||
#undef R0
|
||||
#undef R1
|
||||
/* Add the starting values of the context according to FIPS 180-2:6.3.2
|
||||
step 4. */
|
||||
a += a_save;
|
||||
b += b_save;
|
||||
c += c_save;
|
||||
d += d_save;
|
||||
e += e_save;
|
||||
f += f_save;
|
||||
g += g_save;
|
||||
h += h_save;
|
||||
|
||||
/* Prepare for the next round. */
|
||||
nwords -= 16;
|
||||
}
|
||||
|
||||
/* Put checksum in context given as argument. */
|
||||
ctx->H[0] = a;
|
||||
ctx->H[1] = b;
|
||||
ctx->H[2] = c;
|
||||
ctx->H[3] = d;
|
||||
ctx->H[4] = e;
|
||||
ctx->H[5] = f;
|
||||
ctx->H[6] = g;
|
||||
ctx->H[7] = h;
|
||||
}
|
||||
|
||||
|
||||
void FAST_FUNC sha1_begin(sha1_ctx_t *ctx)
|
||||
{
|
||||
ctx->count[0] = ctx->count[1] = 0;
|
||||
@ -86,6 +373,39 @@ void FAST_FUNC sha1_begin(sha1_ctx_t *ctx)
|
||||
ctx->hash[4] = 0xc3d2e1f0;
|
||||
}
|
||||
|
||||
/* Initialize structure containing state of computation.
|
||||
(FIPS 180-2:5.3.2) */
|
||||
void FAST_FUNC sha256_begin(sha256_ctx_t *ctx)
|
||||
{
|
||||
ctx->H[0] = 0x6a09e667;
|
||||
ctx->H[1] = 0xbb67ae85;
|
||||
ctx->H[2] = 0x3c6ef372;
|
||||
ctx->H[3] = 0xa54ff53a;
|
||||
ctx->H[4] = 0x510e527f;
|
||||
ctx->H[5] = 0x9b05688c;
|
||||
ctx->H[6] = 0x1f83d9ab;
|
||||
ctx->H[7] = 0x5be0cd19;
|
||||
ctx->total[0] = ctx->total[1] = 0;
|
||||
ctx->buflen = 0;
|
||||
}
|
||||
|
||||
/* Initialize structure containing state of computation.
|
||||
(FIPS 180-2:5.3.3) */
|
||||
void FAST_FUNC sha512_begin(sha512_ctx_t *ctx)
|
||||
{
|
||||
ctx->H[0] = 0x6a09e667f3bcc908ULL;
|
||||
ctx->H[1] = 0xbb67ae8584caa73bULL;
|
||||
ctx->H[2] = 0x3c6ef372fe94f82bULL;
|
||||
ctx->H[3] = 0xa54ff53a5f1d36f1ULL;
|
||||
ctx->H[4] = 0x510e527fade682d1ULL;
|
||||
ctx->H[5] = 0x9b05688c2b3e6c1fULL;
|
||||
ctx->H[6] = 0x1f83d9abfb41bd6bULL;
|
||||
ctx->H[7] = 0x5be0cd19137e2179ULL;
|
||||
ctx->total[0] = ctx->total[1] = 0;
|
||||
ctx->buflen = 0;
|
||||
}
|
||||
|
||||
|
||||
/* SHA1 hash data in an array of bytes into hash buffer and call the */
|
||||
/* hash_compile function as required. */
|
||||
void FAST_FUNC sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx)
|
||||
@ -94,7 +414,8 @@ void FAST_FUNC sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx)
|
||||
uint32_t freeb = SHA1_BLOCK_SIZE - pos;
|
||||
const unsigned char *sp = data;
|
||||
|
||||
if ((ctx->count[0] += length) < length)
|
||||
ctx->count[0] += length;
|
||||
if (ctx->count[0] < length)
|
||||
ctx->count[1]++;
|
||||
|
||||
while (length >= freeb) { /* transfer whole blocks while possible */
|
||||
@ -109,6 +430,122 @@ void FAST_FUNC sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx)
|
||||
memcpy(((unsigned char *) ctx->wbuf) + pos, sp, length);
|
||||
}
|
||||
|
||||
void FAST_FUNC sha256_hash(const void *buffer, size_t len, sha256_ctx_t *ctx)
|
||||
{
|
||||
/* When we already have some bits in our internal buffer concatenate
|
||||
both inputs first. */
|
||||
if (ctx->buflen != 0) {
|
||||
size_t left_over = ctx->buflen;
|
||||
size_t add = 128 - left_over > len ? len : 128 - left_over;
|
||||
|
||||
memcpy(&ctx->buffer[left_over], buffer, add);
|
||||
ctx->buflen += add;
|
||||
|
||||
if (ctx->buflen > 64) {
|
||||
sha256_process_block(ctx->buffer, ctx->buflen & ~63, ctx);
|
||||
|
||||
ctx->buflen &= 63;
|
||||
/* The regions in the following copy operation cannot overlap. */
|
||||
memcpy(ctx->buffer,
|
||||
&ctx->buffer[(left_over + add) & ~63],
|
||||
ctx->buflen);
|
||||
}
|
||||
|
||||
buffer = (const char *)buffer + add;
|
||||
len -= add;
|
||||
}
|
||||
|
||||
/* Process available complete blocks. */
|
||||
if (len >= 64) {
|
||||
if (UNALIGNED_P(buffer, uint32_t)) {
|
||||
while (len > 64) {
|
||||
sha256_process_block(memcpy(ctx->buffer, buffer, 64),
|
||||
64, ctx);
|
||||
buffer = (const char *)buffer + 64;
|
||||
len -= 64;
|
||||
}
|
||||
} else {
|
||||
sha256_process_block(buffer, len & ~63, ctx);
|
||||
buffer = (const char *)buffer + (len & ~63);
|
||||
len &= 63;
|
||||
}
|
||||
}
|
||||
|
||||
/* Move remaining bytes into internal buffer. */
|
||||
if (len > 0) {
|
||||
size_t left_over = ctx->buflen;
|
||||
|
||||
memcpy(&ctx->buffer[left_over], buffer, len);
|
||||
left_over += len;
|
||||
if (left_over >= 64) {
|
||||
sha256_process_block(ctx->buffer, 64, ctx);
|
||||
left_over -= 64;
|
||||
memcpy(ctx->buffer, &ctx->buffer[64], left_over);
|
||||
}
|
||||
ctx->buflen = left_over;
|
||||
}
|
||||
}
|
||||
|
||||
void FAST_FUNC sha512_hash(const void *buffer, size_t len, sha512_ctx_t *ctx)
|
||||
{
|
||||
/* When we already have some bits in our internal buffer concatenate
|
||||
both inputs first. */
|
||||
if (ctx->buflen != 0) {
|
||||
size_t left_over = ctx->buflen;
|
||||
size_t add = 256 - left_over > len ? len : 256 - left_over;
|
||||
|
||||
memcpy(&ctx->buffer[left_over], buffer, add);
|
||||
ctx->buflen += add;
|
||||
|
||||
if (ctx->buflen > 128) {
|
||||
sha512_process_block(ctx->buffer, ctx->buflen & ~127, ctx);
|
||||
|
||||
ctx->buflen &= 127;
|
||||
/* The regions in the following copy operation cannot overlap. */
|
||||
memcpy(ctx->buffer,
|
||||
&ctx->buffer[(left_over + add) & ~127],
|
||||
ctx->buflen);
|
||||
}
|
||||
|
||||
buffer = (const char *)buffer + add;
|
||||
len -= add;
|
||||
}
|
||||
|
||||
/* Process available complete blocks. */
|
||||
if (len >= 128) {
|
||||
// #if BB_ARCH_REQUIRES_ALIGNMENT
|
||||
if (UNALIGNED_P(buffer, uint64_t)) {
|
||||
while (len > 128) {
|
||||
sha512_process_block(memcpy(ctx->buffer, buffer, 128),
|
||||
128, ctx);
|
||||
buffer = (const char *)buffer + 128;
|
||||
len -= 128;
|
||||
}
|
||||
} else
|
||||
// #endif
|
||||
{
|
||||
sha512_process_block(buffer, len & ~127, ctx);
|
||||
buffer = (const char *)buffer + (len & ~127);
|
||||
len &= 127;
|
||||
}
|
||||
}
|
||||
|
||||
/* Move remaining bytes into internal buffer. */
|
||||
if (len > 0) {
|
||||
size_t left_over = ctx->buflen;
|
||||
|
||||
memcpy(&ctx->buffer[left_over], buffer, len);
|
||||
left_over += len;
|
||||
if (left_over >= 128) {
|
||||
sha512_process_block(ctx->buffer, 128, ctx);
|
||||
left_over -= 128;
|
||||
memcpy(ctx->buffer, &ctx->buffer[128], left_over);
|
||||
}
|
||||
ctx->buflen = left_over;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void* FAST_FUNC sha1_end(void *resbuf, sha1_ctx_t *ctx)
|
||||
{
|
||||
/* SHA1 Final padding and digest calculation */
|
||||
@ -159,3 +596,76 @@ void* FAST_FUNC sha1_end(void *resbuf, sha1_ctx_t *ctx)
|
||||
|
||||
return resbuf;
|
||||
}
|
||||
|
||||
|
||||
/* Process the remaining bytes in the internal buffer and the usual
|
||||
prolog according to the standard and write the result to RESBUF.
|
||||
|
||||
IMPORTANT: On some systems it is required that RESBUF is correctly
|
||||
aligned for a 32 bits value. */
|
||||
void* FAST_FUNC sha256_end(void *resbuf, sha256_ctx_t *ctx)
|
||||
{
|
||||
/* Take yet unprocessed bytes into account. */
|
||||
uint32_t bytes = ctx->buflen;
|
||||
size_t pad;
|
||||
|
||||
/* Now count remaining bytes. */
|
||||
ctx->total[0] += bytes;
|
||||
if (ctx->total[0] < bytes)
|
||||
ctx->total[1]++;
|
||||
|
||||
/* Pad the buffer to the next 64-byte boundary with 0x80,0,0,0...
|
||||
(FIPS 180-2:5.1.1) */
|
||||
pad = (bytes >= 56 ? 64 + 56 - bytes : 56 - bytes);
|
||||
memset(&ctx->buffer[bytes], 0, pad);
|
||||
ctx->buffer[bytes] = 0x80;
|
||||
|
||||
/* Put the 64-bit file length in *bits* at the end of the buffer. */
|
||||
*(uint32_t *) &ctx->buffer[bytes + pad + 4] = ntohl(ctx->total[0] << 3);
|
||||
*(uint32_t *) &ctx->buffer[bytes + pad] = ntohl((ctx->total[1] << 3) | (ctx->total[0] >> 29));
|
||||
|
||||
/* Process last bytes. */
|
||||
sha256_process_block(ctx->buffer, bytes + pad + 8, ctx);
|
||||
|
||||
/* Put result from CTX in first 32 bytes following RESBUF. */
|
||||
for (unsigned i = 0; i < 8; ++i)
|
||||
((uint32_t *) resbuf)[i] = ntohl(ctx->H[i]);
|
||||
|
||||
return resbuf;
|
||||
}
|
||||
|
||||
/* Process the remaining bytes in the internal buffer and the usual
|
||||
prolog according to the standard and write the result to RESBUF.
|
||||
|
||||
IMPORTANT: On some systems it is required that RESBUF is correctly
|
||||
aligned for a 64 bits value. */
|
||||
void* FAST_FUNC sha512_end(void *resbuf, sha512_ctx_t *ctx)
|
||||
{
|
||||
/* Take yet unprocessed bytes into account. */
|
||||
uint64_t bytes = ctx->buflen;
|
||||
size_t pad;
|
||||
|
||||
/* Now count remaining bytes. */
|
||||
ctx->total[0] += bytes;
|
||||
if (ctx->total[0] < bytes)
|
||||
ctx->total[1]++;
|
||||
|
||||
/* Pad the buffer to the next 128-byte boundary with 0x80,0,0,0...
|
||||
(FIPS 180-2:5.1.2) */
|
||||
pad = bytes >= 112 ? 128 + 112 - bytes : 112 - bytes;
|
||||
memset(&ctx->buffer[bytes], 0, pad);
|
||||
ctx->buffer[bytes] = 0x80;
|
||||
|
||||
/* Put the 128-bit file length in *bits* at the end of the buffer. */
|
||||
*(uint64_t *) &ctx->buffer[bytes + pad + 8] = hton64(ctx->total[0] << 3);
|
||||
*(uint64_t *) &ctx->buffer[bytes + pad] = hton64((ctx->total[1] << 3) | (ctx->total[0] >> 61));
|
||||
|
||||
/* Process last bytes. */
|
||||
sha512_process_block(ctx->buffer, bytes + pad + 16, ctx);
|
||||
|
||||
/* Put result from CTX in first 64 bytes following RESBUF. */
|
||||
for (unsigned i = 0; i < 8; ++i)
|
||||
((uint64_t *) resbuf)[i] = hton64(ctx->H[i]);
|
||||
|
||||
return resbuf;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user