diff options
Diffstat (limited to '')
| -rw-r--r-- | libsha2.h | 47 |
1 files changed, 35 insertions, 12 deletions
@@ -2,6 +2,7 @@ #ifndef LIBSHA2_H #define LIBSHA2_H 1 +#include <errno.h> #include <stdint.h> #include <stddef.h> @@ -195,26 +196,44 @@ __attribute__((__leaf__, __nothrow__, __nonnull__)) int libsha2_init(struct libsha2_state *restrict, enum libsha2_algorithm); /** - * Get the output size of the algorithm specified for a state + * Get the output size of an algorithm * - * @param state The state - * @return The number of bytes in the output, zero on error + * @param algorithm The hashing algorithm + * @return The number of bytes in the output, zero on error */ #if defined(__GNUC__) -__attribute__((__nothrow__, __nonnull__, __pure__)) +__attribute__((__warn_unused_result__, __nothrow__)) #endif -size_t libsha2_state_output_size(const struct libsha2_state *restrict); +inline size_t +libsha2_algorithm_output_size(enum libsha2_algorithm algorithm__) +{ + switch (algorithm__) { + case LIBSHA2_224: return 28; + case LIBSHA2_256: return 32; + case LIBSHA2_384: return 48; + case LIBSHA2_512: return 64; + case LIBSHA2_512_224: return 28; + case LIBSHA2_512_256: return 32; + default: + errno = EINVAL; + return 0; + } +} /** - * Get the output size of an algorithm + * Get the output size of the algorithm specified for a state * - * @param algorithm The hashing algorithm - * @return The number of bytes in the output, zero on error + * @param state The state + * @return The number of bytes in the output, zero on error */ #if defined(__GNUC__) -__attribute__((__leaf__, __nothrow__, __const__)) +__attribute__((__warn_unused_result__, __nothrow__, __nonnull__)) #endif -size_t libsha2_algorithm_output_size(enum libsha2_algorithm); +inline size_t +libsha2_state_output_size(const struct libsha2_state *restrict state__) +{ + return libsha2_algorithm_output_size(state__->algorithm); +} /** * Absorb more of the message @@ -338,9 +357,13 @@ int libsha2_hmac_init(struct libsha2_hmac_state *restrict, enum libsha2_algorith * @return The number of bytes in the output, zero on error */ #if defined(__GNUC__) -__attribute__((__nothrow__, __nonnull__, __pure__)) +__attribute__((__warn_unused_result__, __nothrow__, __nonnull__)) #endif -size_t libsha2_hmac_state_output_size(const struct libsha2_hmac_state *restrict); +inline size_t +libsha2_hmac_state_output_size(const struct libsha2_hmac_state *restrict state__) +{ + return libsha2_algorithm_output_size(state__->sha2_state.algorithm); +} /** * Feed data into the HMAC algorithm |