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https://github.com/wolfSSL/wolfssl.git
synced 2025-08-04 05:04:41 +02:00
Added comments in aes.c for locating software implementation of algorithm using Software AES.
This commit is contained in:
David Garske
@@ -29,6 +29,8 @@
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#if !defined(NO_AES)
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/* Tip: Locate the software cipher modes by searching for "Software AES" */
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#if defined(HAVE_FIPS) && \
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defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2)
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@@ -737,7 +739,7 @@
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#else
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/* using wolfCrypt software AES implementation */
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/* using wolfCrypt software implementation */
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#define NEED_AES_TABLES
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#endif
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@@ -1360,7 +1362,7 @@ static WC_INLINE word32 PreFetchTe(void)
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return x;
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}
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/* Software AES - ECB Encrypt */
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static void wc_AesEncrypt(Aes* aes, const byte* inBlock, byte* outBlock)
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{
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word32 s0, s1, s2, s3;
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@@ -1370,7 +1372,7 @@ static void wc_AesEncrypt(Aes* aes, const byte* inBlock, byte* outBlock)
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if (r > 7 || r == 0) {
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WOLFSSL_MSG("AesEncrypt encountered improper key, set it up");
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return; /* stop instead of segfaulting, set up your keys! */
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return; /* stop instead of seg-faulting, set up your keys! */
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}
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#ifdef WOLFSSL_AESNI
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@@ -1579,6 +1581,7 @@ static WC_INLINE word32 PreFetchTd4(void)
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return x;
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}
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/* Software AES - ECB Decrypt */
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static void wc_AesDecrypt(Aes* aes, const byte* inBlock, byte* outBlock)
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{
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word32 s0, s1, s2, s3;
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@@ -1588,7 +1591,7 @@ static void wc_AesDecrypt(Aes* aes, const byte* inBlock, byte* outBlock)
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const word32* rk = aes->key;
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if (r > 7 || r == 0) {
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WOLFSSL_MSG("AesDecrypt encountered improper key, set it up");
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return; /* stop instead of segfaulting, set up your keys! */
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return; /* stop instead of seg-faulting, set up your keys! */
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}
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#ifdef WOLFSSL_AESNI
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if (haveAESNI && aes->use_aesni) {
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@@ -1955,6 +1958,8 @@ static void wc_AesDecrypt(Aes* aes, const byte* inBlock, byte* outBlock)
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/* implemented in wolfcrypt/src/port/devcrypto/devcrypto_aes.c */
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#else
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/* Software AES - SetKey */
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static int wc_AesSetKeyLocal(Aes* aes, const byte* userKey, word32 keylen,
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const byte* iv, int dir)
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{
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@@ -2828,6 +2833,7 @@ int wc_AesSetIV(Aes* aes, const byte* iv)
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#else
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/* Software AES - CBC Encrypt */
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int wc_AesCbcEncrypt(Aes* aes, byte* out, const byte* in, word32 sz)
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{
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word32 blocks = (sz / AES_BLOCK_SIZE);
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@@ -2917,6 +2923,7 @@ int wc_AesSetIV(Aes* aes, const byte* iv)
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}
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#ifdef HAVE_AES_DECRYPT
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/* Software AES - CBC Decrypt */
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int wc_AesCbcDecrypt(Aes* aes, byte* out, const byte* in, word32 sz)
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{
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word32 blocks;
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@@ -3171,6 +3178,7 @@ int wc_AesSetIV(Aes* aes, const byte* iv)
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}
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}
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/* Software AES - CTR Encrypt */
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int wc_AesCtrEncrypt(Aes* aes, byte* out, const byte* in, word32 sz)
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{
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byte* tmp;
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@@ -3348,7 +3356,7 @@ static void GenerateM0(Aes* aes)
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#endif /* GCM_TABLE */
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/* Software AES - GCM SetKey */
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int wc_AesGcmSetKey(Aes* aes, const byte* key, word32 len)
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{
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int ret;
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@@ -8367,6 +8375,7 @@ int AES_GCM_encrypt_C(Aes* aes, byte* out, const byte* in, word32 sz,
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return ret;
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}
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/* Software AES - GCM Encrypt */
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int wc_AesGcmEncrypt(Aes* aes, byte* out, const byte* in, word32 sz,
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const byte* iv, word32 ivSz,
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byte* authTag, word32 authTagSz,
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@@ -8452,8 +8461,6 @@ int wc_AesGcmEncrypt(Aes* aes, byte* out, const byte* in, word32 sz,
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}
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#endif /* WOLFSSL_ASYNC_CRYPT */
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/* Software AES-GCM */
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#ifdef WOLFSSL_AESNI
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#ifdef HAVE_INTEL_AVX2
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if (IS_INTEL_AVX2(intel_flags)) {
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@@ -8765,6 +8772,7 @@ int AES_GCM_decrypt_C(Aes* aes, byte* out, const byte* in, word32 sz,
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return ret;
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}
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/* Software AES - GCM Decrypt */
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int wc_AesGcmDecrypt(Aes* aes, byte* out, const byte* in, word32 sz,
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const byte* iv, word32 ivSz,
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const byte* authTag, word32 authTagSz,
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@@ -8852,8 +8860,6 @@ int wc_AesGcmDecrypt(Aes* aes, byte* out, const byte* in, word32 sz,
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}
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#endif /* WOLFSSL_ASYNC_CRYPT */
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/* software AES GCM */
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#ifdef WOLFSSL_AESNI
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#ifdef HAVE_INTEL_AVX2
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if (IS_INTEL_AVX2(intel_flags)) {
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@@ -9155,10 +9161,9 @@ int wc_AesCcmDecrypt(Aes* aes, byte* out, const byte* in, word32 inSz,
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}
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#endif /* HAVE_AES_DECRYPT */
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/* software AES CCM */
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#else
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/* Software CCM */
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static void roll_x(Aes* aes, const byte* in, word32 inSz, byte* out)
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{
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/* process the bulk of the data */
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@@ -9231,6 +9236,7 @@ static WC_INLINE void AesCcmCtrInc(byte* B, word32 lenSz)
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}
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}
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/* Software AES - CCM Encrypt */
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/* return 0 on success */
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int wc_AesCcmEncrypt(Aes* aes, byte* out, const byte* in, word32 inSz,
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const byte* nonce, word32 nonceSz,
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@@ -9299,6 +9305,7 @@ int wc_AesCcmEncrypt(Aes* aes, byte* out, const byte* in, word32 inSz,
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}
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#ifdef HAVE_AES_DECRYPT
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/* Software AES - CCM Decrypt */
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int wc_AesCcmDecrypt(Aes* aes, byte* out, const byte* in, word32 inSz,
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const byte* nonce, word32 nonceSz,
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const byte* authTag, word32 authTagSz,
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@@ -9390,7 +9397,7 @@ int wc_AesCcmDecrypt(Aes* aes, byte* out, const byte* in, word32 inSz,
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}
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#endif /* HAVE_AES_DECRYPT */
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#endif /* software AES CCM */
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#endif /* software CCM */
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/* abstract functions that call lower level AESCCM functions */
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#ifndef WC_NO_RNG
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@@ -9584,7 +9591,7 @@ int wc_AesGetKeySize(Aes* aes, word32* keySize)
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#else
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/* software implementation */
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/* Software AES - ECB */
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int wc_AesEcbEncrypt(Aes* aes, byte* out, const byte* in, word32 sz)
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{
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word32 blocks = sz / AES_BLOCK_SIZE;
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@@ -9631,6 +9638,7 @@ int wc_AesEcbDecrypt(Aes* aes, byte* out, const byte* in, word32 sz)
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*
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* returns 0 on success and negative error values on failure
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*/
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/* Software AES - CFB Encrypt */
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int wc_AesCfbEncrypt(Aes* aes, byte* out, const byte* in, word32 sz)
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{
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byte* tmp = NULL;
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@@ -9692,6 +9700,7 @@ int wc_AesCfbEncrypt(Aes* aes, byte* out, const byte* in, word32 sz)
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*
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* returns 0 on success and negative error values on failure
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*/
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/* Software AES - CFB Decrypt */
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int wc_AesCfbDecrypt(Aes* aes, byte* out, const byte* in, word32 sz)
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{
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byte* tmp;
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@@ -10070,7 +10079,7 @@ static int _AesXtsHelper(Aes* aes, byte* out, const byte* in, word32 sz, int dir
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word32 j;
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byte carry = 0;
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/* multiply by shift left and propogate carry */
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/* multiply by shift left and propagate carry */
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for (j = 0; j < AES_BLOCK_SIZE && outSz > 0; j++, outSz--) {
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byte tmpC;
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@@ -10108,6 +10117,7 @@ static int _AesXtsHelper(Aes* aes, byte* out, const byte* in, word32 sz, int dir
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*
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* returns 0 on success
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*/
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/* Software AES - XTS Encrypt */
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int wc_AesXtsEncrypt(XtsAes* xaes, byte* out, const byte* in, word32 sz,
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const byte* i, word32 iSz)
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{
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@@ -10160,7 +10170,7 @@ int wc_AesXtsEncrypt(XtsAes* xaes, byte* out, const byte* in, word32 sz,
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#endif
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xorbuf(out, tmp, AES_BLOCK_SIZE);
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/* multiply by shift left and propogate carry */
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/* multiply by shift left and propagate carry */
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for (j = 0; j < AES_BLOCK_SIZE; j++) {
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byte tmpC;
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@@ -10215,6 +10225,7 @@ int wc_AesXtsEncrypt(XtsAes* xaes, byte* out, const byte* in, word32 sz,
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*
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* returns 0 on success
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*/
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/* Software AES - XTS Decrypt */
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int wc_AesXtsDecrypt(XtsAes* xaes, byte* out, const byte* in, word32 sz,
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const byte* i, word32 iSz)
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{
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@@ -10274,7 +10285,7 @@ int wc_AesXtsDecrypt(XtsAes* xaes, byte* out, const byte* in, word32 sz,
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#endif
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xorbuf(out, tmp, AES_BLOCK_SIZE);
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/* multiply by shift left and propogate carry */
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/* multiply by shift left and propagate carry */
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for (j = 0; j < AES_BLOCK_SIZE; j++) {
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byte tmpC;
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@@ -10298,7 +10309,7 @@ int wc_AesXtsDecrypt(XtsAes* xaes, byte* out, const byte* in, word32 sz,
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byte buf[AES_BLOCK_SIZE];
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byte tmp2[AES_BLOCK_SIZE];
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/* multiply by shift left and propogate carry */
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/* multiply by shift left and propagate carry */
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for (j = 0; j < AES_BLOCK_SIZE; j++) {
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byte tmpC;
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