diff options
| -rw-r--r-- | chip/g/dcrypto/rsa.c | 13 | ||||
| -rw-r--r-- | common/util.c | 15 | ||||
| -rw-r--r-- | include/util.h | 5 |
3 files changed, 20 insertions, 13 deletions
diff --git a/chip/g/dcrypto/rsa.c b/chip/g/dcrypto/rsa.c index 9d854e7533..5107773a30 100644 --- a/chip/g/dcrypto/rsa.c +++ b/chip/g/dcrypto/rsa.c @@ -297,19 +297,6 @@ static int check_pkcs1_type1_pad(const uint8_t *msg, uint32_t msg_len, return memcmp(msg, &padded[i], hash_size) == 0; } -static void reverse(uint8_t *start, size_t len) -{ - int i; - uint8_t *end = start + len; - - for (i = 0; i < len / 2; ++i) { - uint8_t tmp = *start; - - *start++ = *--end; - *end = tmp; - } -} - static int check_modulus_params(const struct BIGNUM *N, uint32_t *out_len) { if (bn_size(N) > RSA_MAX_BYTES) diff --git a/common/util.c b/common/util.c index 2b745e8621..9df5b5596f 100644 --- a/common/util.c +++ b/common/util.c @@ -305,6 +305,21 @@ void *memmove(void *dest, const void *src, size_t len) } +void reverse(void *dest, size_t len) +{ + int i; + uint8_t *start = dest; + uint8_t *end = start + len; + + for (i = 0; i < len / 2; ++i) { + uint8_t tmp = *start; + + *start++ = *--end; + *end = tmp; + } +} + + char *strzcpy(char *dest, const char *src, int len) { char *d = dest; diff --git a/include/util.h b/include/util.h index d8967ec0c0..fd8f5d40c9 100644 --- a/include/util.h +++ b/include/util.h @@ -146,6 +146,11 @@ int uint64divmod(uint64_t *v, int by); */ int get_next_bit(uint32_t *mask); +/** + * Reverse's the byte-order of the provided buffer. + */ +void reverse(void *dest, size_t len); + /****************************************************************************/ /* Conditional stuff. |