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Sanity checks and correct comment

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This commit is contained in:
Lealem Amedie
2023-10-11 12:03:02 -06:00
parent a27b49882d
commit e7eec645b0
1 changed files with 20 additions and 2 deletions
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22
wolfcrypt/src/aes.c
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@ -11441,8 +11441,8 @@ int wc_AesXtsDecrypt(XtsAes* xaes, byte* out, const byte* in, word32 sz,
} }
#endif /* !WOLFSSL_ARMASM || WOLFSSL_ARMASM_NO_HW_CRYPTO */ #endif /* !WOLFSSL_ARMASM || WOLFSSL_ARMASM_NO_HW_CRYPTO */
/* Same as wc_AesXtsEncryptSector but the sector gets incremented by the /* Same as wc_AesXtsEncryptSector but the sector gets incremented by one every
* sectorSz every 32 blocks * sectorSz bytes
* *
* xaes AES keys to use for block encrypt * xaes AES keys to use for block encrypt
* out output buffer to hold cipher text * out output buffer to hold cipher text
@ -11461,6 +11461,15 @@ int wc_AesXtsEncryptConsecutiveSectors(XtsAes* aes, byte* out, const byte* in,
int sectorCount = sz / sectorSz; int sectorCount = sz / sectorSz;
int remainder = sz % sectorSz; int remainder = sz % sectorSz;
if (aes == NULL || out == NULL || in == NULL || sectorSz == 0) {
return BAD_FUNC_ARG;
}
if (sz < AES_BLOCK_SIZE) {
WOLFSSL_MSG("Cipher text input too small for encryption");
return BAD_FUNC_ARG;
}
while (sectorCount) { while (sectorCount) {
ret = wc_AesXtsEncryptSector(aes, out + (iter * sectorSz), ret = wc_AesXtsEncryptSector(aes, out + (iter * sectorSz),
in + (iter * sectorSz), sectorSz, sector); in + (iter * sectorSz), sectorSz, sector);
@ -11498,6 +11507,15 @@ int wc_AesXtsDecryptConsecutiveSectors(XtsAes* aes, byte* out, const byte* in,
int sectorCount = sz / sectorSz; int sectorCount = sz / sectorSz;
int remainder = sz % sectorSz; int remainder = sz % sectorSz;
if (aes == NULL || out == NULL || in == NULL || sectorSz == 0) {
return BAD_FUNC_ARG;
}
if (sz < AES_BLOCK_SIZE) {
WOLFSSL_MSG("Cipher text input too small for decryption");
return BAD_FUNC_ARG;
}
while (sectorCount) { while (sectorCount) {
ret = wc_AesXtsDecryptSector(aes, out + (iter * sectorSz), ret = wc_AesXtsDecryptSector(aes, out + (iter * sectorSz),
in + (iter * sectorSz), sectorSz, sector); in + (iter * sectorSz), sectorSz, sector);