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Show First 20 Lines • Show All 138 Lines • ▼ Show 20 Lines	aes_gcm_reinit(void key, const uint8_t iv, size_t ivlen)
ctx->ac_block[AESICM_BLOCKSIZE - 1] = 2;		ctx->ac_block[AESICM_BLOCKSIZE - 1] = 2;
}		}

static void		static void
aes_ccm_reinit(void key, const uint8_t iv, size_t ivlen)		aes_ccm_reinit(void key, const uint8_t iv, size_t ivlen)
{		{
struct aes_icm_ctx *ctx;		struct aes_icm_ctx *ctx;

KASSERT(ivlen == AES_CCM_IV_LEN,		KASSERT(ivlen >= 7 && ivlen <= 13,
("%s: invalid IV length", __func__));		("%s: invalid IV length", __func__));
ctx = key;		ctx = key;

/* CCM has flags, then the IV, then the counter, which starts at 1 */		/* CCM has flags, then the IV, then the counter, which starts at 1 */
bzero(ctx->ac_block, sizeof(ctx->ac_block));		bzero(ctx->ac_block, sizeof(ctx->ac_block));
/* 3 bytes for length field; this gives a nonce of 12 bytes */		ctx->ac_block[0] = (15 - ivlen) - 1;
ctx->ac_block[0] = (15 - AES_CCM_IV_LEN) - 1;		bcopy(iv, ctx->ac_block + 1, ivlen);
bcopy(iv, ctx->ac_block+1, AES_CCM_IV_LEN);
ctx->ac_block[AESICM_BLOCKSIZE - 1] = 1;		ctx->ac_block[AESICM_BLOCKSIZE - 1] = 1;
}		}

static void		static void
aes_icm_crypt(void key, const uint8_t in, uint8_t *out)		aes_icm_crypt(void key, const uint8_t in, uint8_t *out)
{		{
struct aes_icm_ctx *ctx;		struct aes_icm_ctx *ctx;
int i;		int i;
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