mirror of
https://github.com/classilla/tenfourfox.git
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117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GCM_H
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#define GCM_H 1
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#include "blapii.h"
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#include <stdint.h>
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#ifdef NSS_X86_OR_X64
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/* GCC <= 4.8 doesn't support including emmintrin.h without enabling SSE2 */
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#if !defined(__clang__) && defined(__GNUC__) && defined(__GNUC_MINOR__) && \
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(__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ <= 8))
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#pragma GCC push_options
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#pragma GCC target("sse2")
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#undef NSS_DISABLE_SSE2
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#define NSS_DISABLE_SSE2 1
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#endif /* GCC <= 4.8 */
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#include <emmintrin.h> /* __m128i */
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#ifdef NSS_DISABLE_SSE2
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#undef NSS_DISABLE_SSE2
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#pragma GCC pop_options
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#endif /* NSS_DISABLE_SSE2 */
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#endif
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#ifdef __aarch64__
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#include <arm_neon.h>
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#endif
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#ifdef __powerpc64__
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#include "altivec-types.h"
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/* The ghash freebl test tries to use this in C++, and gcc defines conflict. */
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#ifdef __cplusplus
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#undef pixel
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#undef vector
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#undef bool
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#endif
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/*
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* PPC CRYPTO requires at least gcc 5 or clang. The LE check is purely
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* because it's only been tested on LE. If you're interested in BE,
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* please send a patch.
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*/
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#if (defined(__clang__) || (defined(__GNUC__) && __GNUC__ >= 5)) && \
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defined(IS_LITTLE_ENDIAN)
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#define USE_PPC_CRYPTO
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#endif
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#endif
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SEC_BEGIN_PROTOS
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#ifdef HAVE_INT128_SUPPORT
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typedef unsigned __int128 uint128_t;
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#endif
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typedef struct GCMContextStr GCMContext;
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/*
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* The context argument is the inner cipher context to use with cipher. The
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* GCMContext does not own context. context needs to remain valid for as long
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* as the GCMContext is valid.
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*
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* The cipher argument is a block cipher in the ECB encrypt mode.
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*/
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GCMContext *GCM_CreateContext(void *context, freeblCipherFunc cipher,
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const unsigned char *params);
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void GCM_DestroyContext(GCMContext *gcm, PRBool freeit);
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SECStatus GCM_EncryptUpdate(GCMContext *gcm, unsigned char *outbuf,
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unsigned int *outlen, unsigned int maxout,
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const unsigned char *inbuf, unsigned int inlen,
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unsigned int blocksize);
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SECStatus GCM_DecryptUpdate(GCMContext *gcm, unsigned char *outbuf,
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unsigned int *outlen, unsigned int maxout,
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const unsigned char *inbuf, unsigned int inlen,
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unsigned int blocksize);
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/* These functions are here only so we can test them */
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#define GCM_HASH_LEN_LEN 8 /* gcm hash defines lengths to be 64 bits */
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typedef struct gcmHashContextStr gcmHashContext;
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typedef SECStatus (*ghash_t)(gcmHashContext *, const unsigned char *,
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unsigned int);
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pre_align struct gcmHashContextStr {
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#ifdef NSS_X86_OR_X64
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__m128i x, h;
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#elif defined(__aarch64__)
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uint64x2_t x, h;
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#elif defined(USE_PPC_CRYPTO)
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vec_u64 x, h;
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#endif
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uint64_t x_low, x_high, h_high, h_low;
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unsigned char buffer[MAX_BLOCK_SIZE];
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unsigned int bufLen;
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uint8_t counterBuf[16];
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uint64_t cLen;
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ghash_t ghash_mul;
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PRBool hw;
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gcmHashContext *mem;
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} post_align;
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SECStatus gcmHash_Update(gcmHashContext *ghash, const unsigned char *buf,
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unsigned int len);
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SECStatus gcmHash_InitContext(gcmHashContext *ghash, const unsigned char *H,
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PRBool sw);
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SECStatus gcmHash_Reset(gcmHashContext *ghash, const unsigned char *AAD,
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unsigned int AADLen);
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SECStatus gcmHash_Final(gcmHashContext *ghash, unsigned char *outbuf,
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unsigned int *outlen, unsigned int maxout);
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SEC_END_PROTOS
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#endif
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