diff options
Diffstat (limited to 'chip/g/dcrypto/dcrypto.h')
| -rw-r--r-- | chip/g/dcrypto/dcrypto.h | 60 |
1 files changed, 55 insertions, 5 deletions
diff --git a/chip/g/dcrypto/dcrypto.h b/chip/g/dcrypto/dcrypto.h index 1dab319392..7cafb224da 100644 --- a/chip/g/dcrypto/dcrypto.h +++ b/chip/g/dcrypto/dcrypto.h @@ -4,15 +4,15 @@ */ /* - * Crypto wrapper library for CR50. + * Crypto wrapper library for the g chip. */ -#ifndef EC_BOARD_CR50_DCRYPTO_DCRYPTO_H_ -#define EC_BOARD_CR50_DCRYPTO_DCRYPTO_H_ +#ifndef __EC_CHIP_G_DCRYPTO_DCRYPTO_H +#define __EC_CHIP_G_DCRYPTO_DCRYPTO_H /* TODO(vbendeb) don't forget to disable this for prod builds. */ #define CRYPTO_TEST_SETUP -#include <inttypes.h> +#include "internal.h" enum cipher_mode { CIPHER_MODE_ECB = 0, @@ -26,6 +26,36 @@ enum encrypt_mode { ENCRYPT_MODE = 1 }; +#define SHA1_DIGEST_BYTES 20 +#define SHA256_DIGEST_BYTES 32 +#define SHA384_DIGEST_BYTES 48 +#define SHA512_DIGEST_BYTES 64 +#define SHA_DIGEST_MAX_BYTES SHA512_DIGEST_BYTES + +#define SHA1_DIGEST_WORDS (SHA1_DIGEST_BYTES / sizeof(uint32_t)) +#define SHA256_DIGEST_WORDS (SHA256_DIGEST_BYTES / sizeof(uint32_t)) +#define SHA384_DIGEST_WORDS (SHA384_DIGEST_BYTES / sizeof(uint32_t)) +#define SHA512_DIGEST_WORDS (SHA512_DIGEST_BYTES / sizeof(uint32_t)) + +struct HASH_CTX; /* Forward declaration. */ + +typedef struct HASH_CTX SHA1_CTX; +typedef struct HASH_CTX SHA256_CTX; + +#define DCRYPTO_HASH_update(ctx, data, len) \ + ((ctx)->vtab->update((ctx), (data), (len))) +#define DCRYPTO_HASH_final(ctx) \ + ((ctx)->vtab->final((ctx))) +#define DCRYPTO_HASH_size(ctx) \ + ((ctx)->vtab->size) + +#define DCRYPTO_SHA1_update(ctx, data, n) \ + DCRYPTO_HASH_update((ctx), (data), (n)) +#define DCRYPTO_SHA1_final(ctx) DCRYPTO_HASH_final((ctx)) + +/* + * AES implementation, based on a hardware AES block. + */ int DCRYPTO_aes_init(const uint8_t *key, uint32_t key_len, const uint8_t *iv, enum cipher_mode c_mode, enum encrypt_mode e_mode); int DCRYPTO_aes_block(const uint8_t *in, uint8_t *out); @@ -33,4 +63,24 @@ int DCRYPTO_aes_block(const uint8_t *in, uint8_t *out); void DCRYPTO_aes_write_iv(const uint8_t *iv); void DCRYPTO_aes_read_iv(uint8_t *iv); -#endif /* ! EC_BOARD_CR50_DCRYPTO_DCRYPTO_H_ */ +/* + * SHA implementation. This abstraction is backed by either a + * software or hardware implementation. + * + * There could be only a single hardware SHA context in progress. The init + * functions will try using the HW context, if available, unless 'sw_required' + * is TRUE, in which case there will be no attempt to use the hardware for + * this particular hashing session. + */ +void DCRYPTO_SHA1_init(SHA1_CTX *ctx, uint32_t sw_required); +void DCRYPTO_SHA256_init(SHA256_CTX *ctx, uint32_t sw_required); +const uint8_t *DCRYPTO_SHA1_hash(const uint8_t *data, uint32_t n, + uint8_t *digest); + +#define DCRYPTO_SHA256_update(ctx, data, n) \ + DCRYPTO_HASH_update((ctx), (data), (n)) +#define DCRYPTO_SHA256_final(ctx) DCRYPTO_HASH_final((ctx)) +const uint8_t *DCRYPTO_SHA256_hash(const uint8_t *data, uint32_t n, + uint8_t *digest); + +#endif /* ! __EC_CHIP_G_DCRYPTO_DCRYPTO_H */ |