diff options
Diffstat (limited to 'src/common/crypto.h')
| -rw-r--r-- | src/common/crypto.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/common/crypto.h b/src/common/crypto.h index a9c8837b9e..f8a392dff1 100644 --- a/src/common/crypto.h +++ b/src/common/crypto.h @@ -90,6 +90,13 @@ typedef struct crypto_digest_t crypto_digest_t; typedef struct crypto_xof_t crypto_xof_t; typedef struct crypto_dh_t crypto_dh_t; +#define DIGEST_CHECKPOINT_BYTES (SIZEOF_VOID_P + SIZEOF_SHA_CTX) +/** Structure used to temporarily save the a digest object. Only implemented + * for SHA1 digest for now. */ +typedef struct crypto_digest_checkpoint_t { + uint8_t mem[DIGEST_CHECKPOINT_BYTES]; +} crypto_digest_checkpoint_t; + /* global state */ int crypto_early_init(void) ATTR_WUR; int crypto_global_init(int hardwareAccel, @@ -178,6 +185,10 @@ void crypto_digest_add_bytes(crypto_digest_t *digest, const char *data, void crypto_digest_get_digest(crypto_digest_t *digest, char *out, size_t out_len); crypto_digest_t *crypto_digest_dup(const crypto_digest_t *digest); +void crypto_digest_checkpoint(crypto_digest_checkpoint_t *checkpoint, + const crypto_digest_t *digest); +void crypto_digest_restore(crypto_digest_t *digest, + const crypto_digest_checkpoint_t *checkpoint); void crypto_digest_assign(crypto_digest_t *into, const crypto_digest_t *from); void crypto_hmac_sha256(char *hmac_out, |