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| author | Philippe Reynes <philippe.reynes@softathome.com> | 2024-12-19 14:05:50 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2025-01-18 17:12:47 -0600 |
| commit | e364a9148f0adecf32628c16b1571dd729b45358 (patch) | |
| tree | a218968fa263d5d460a9700a195066c029c0e2df /lib/mbedtls/sha256.c | |
| parent | ccc5e166836c2fa204a58fe9ac87c5fce72b5e7b (diff) | |
lib: sha256: add feature sha256_hmac
Adds the support of the hmac based on sha256.
This implementation is based on rfc2104.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Raymond Mao <raymond.mao@linaro.org>
Diffstat (limited to 'lib/mbedtls/sha256.c')
| -rw-r--r-- | lib/mbedtls/sha256.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/mbedtls/sha256.c b/lib/mbedtls/sha256.c index 2128e598834..7d456a82017 100644 --- a/lib/mbedtls/sha256.c +++ b/lib/mbedtls/sha256.c @@ -10,6 +10,8 @@ #endif /* USE_HOSTCC */ #include <u-boot/sha256.h> +#include <mbedtls/md.h> + const u8 sha256_der_prefix[SHA256_DER_LEN] = { 0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05, @@ -33,3 +35,16 @@ void sha256_finish(sha256_context *ctx, uint8_t digest[SHA256_SUM_LEN]) mbedtls_sha256_finish(ctx, digest); mbedtls_sha256_free(ctx); } + +int sha256_hmac(const unsigned char *key, int keylen, + const unsigned char *input, unsigned int ilen, + unsigned char *output) +{ + const mbedtls_md_info_t *md; + + md = mbedtls_md_info_from_type(MBEDTLS_MD_SHA256); + if (!md) + return MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE; + + return mbedtls_md_hmac(md, key, keylen, input, ilen, output); +} |