C++ (Cpp) aesni_set_enckey Examples

Example #1

File: aesni_wrap.c Project: Digital-Chaos/freebsd

int
aesni_cipher_setup_common(struct aesni_session *ses, const uint8_t *key,
    int keylen)
{
	int decsched;

	decsched = 1;

	switch (ses->algo) {
	case CRYPTO_AES_ICM:
	case CRYPTO_AES_NIST_GCM_16:
		decsched = 0;
		/* FALLTHROUGH */
	case CRYPTO_AES_CBC:
		switch (keylen) {
		case 128:
			ses->rounds = AES128_ROUNDS;
			break;
		case 192:
			ses->rounds = AES192_ROUNDS;
			break;
		case 256:
			ses->rounds = AES256_ROUNDS;
			break;
		default:
			CRYPTDEB("invalid CBC/ICM/GCM key length");
			return (EINVAL);
		}
		break;
	case CRYPTO_AES_XTS:
		switch (keylen) {
		case 256:
			ses->rounds = AES128_ROUNDS;
			break;
		case 512:
			ses->rounds = AES256_ROUNDS;
			break;
		default:
			CRYPTDEB("invalid XTS key length");
			return (EINVAL);
		}
		break;
	default:
		return (EINVAL);
	}

	aesni_set_enckey(key, ses->enc_schedule, ses->rounds);
	if (decsched)
		aesni_set_deckey(ses->enc_schedule, ses->dec_schedule,
		    ses->rounds);

	if (ses->algo == CRYPTO_AES_XTS)
		aesni_set_enckey(key + keylen / 16, ses->xts_schedule,
		    ses->rounds);

	return (0);
}

Example #2

File: aesni_wrap.c Project: coyizumi/cs111

int
aesni_cipher_setup_common(struct aesni_session *ses, const uint8_t *key,
    int keylen)
{

	switch (ses->algo) {
	case CRYPTO_AES_CBC:
		switch (keylen) {
		case 128:
			ses->rounds = AES128_ROUNDS;
			break;
		case 192:
			ses->rounds = AES192_ROUNDS;
			break;
		case 256:
			ses->rounds = AES256_ROUNDS;
			break;
		default:
			return (EINVAL);
		}
		break;
	case CRYPTO_AES_XTS:
		switch (keylen) {
		case 256:
			ses->rounds = AES128_ROUNDS;
			break;
		case 512:
			ses->rounds = AES256_ROUNDS;
			break;
		default:
			return (EINVAL);
		}
		break;
	default:
		return (EINVAL);
	}

	aesni_set_enckey(key, ses->enc_schedule, ses->rounds);
	aesni_set_deckey(ses->enc_schedule, ses->dec_schedule, ses->rounds);
	if (ses->algo == CRYPTO_AES_CBC)
		arc4rand(ses->iv, sizeof(ses->iv), 0);
	else /* if (ses->algo == CRYPTO_AES_XTS) */ {
		aesni_set_enckey(key + keylen / 16, ses->xts_schedule,
		    ses->rounds);
	}

	return (0);
}

Example #3

int
aesni_cipher_setup(struct aesni_session *ses, struct cryptoini *encini)
{
	struct thread *td;
	int error;

	switch (encini->cri_klen) {
	case 128:
		ses->rounds = AES128_ROUNDS;
		break;
	case 192:
		ses->rounds = AES192_ROUNDS;
		break;
	case 256:
		ses->rounds = AES256_ROUNDS;
		break;
	default:
		return (EINVAL);
	}

	td = curthread;
	error = fpu_kern_enter(td, &ses->fpu_ctx, FPU_KERN_NORMAL);
	if (error == 0) {
		aesni_set_enckey(encini->cri_key, ses->enc_schedule,
		    ses->rounds);
		aesni_set_deckey(ses->enc_schedule, ses->dec_schedule,
		    ses->rounds);
		arc4rand(ses->iv, sizeof(ses->iv), 0);
		fpu_kern_leave(td, &ses->fpu_ctx);
	}
	return (error);
}

Example #4

File: pefs_aesni.c Project: glk/pefs

static int
pefs_aesni_keysetup(const struct pefs_session *xses,
    struct pefs_ctx *xctx, const uint8_t *key, uint32_t keybits)
{
	const struct pefs_aesni_ses *ses = &xses->o.ps_aesni;
	struct pefs_aesni_ctx *ctx = &xctx->o.pctx_aesni;
	struct fpu_kern_ctx *tmpctx = NULL;

	switch (keybits) {
	case 128:
		ctx->rounds = AES128_ROUNDS;
		break;
	case 192:
		ctx->rounds = AES192_ROUNDS;
		break;
	case 256:
		ctx->rounds = AES256_ROUNDS;
		break;
	default:
		printf("pefs: AESNI: invalid key length: %d", keybits);
		return (EINVAL);
	}

	if (ses->fpu_saved < 0) {
		tmpctx = fpu_kern_alloc_ctx(FPU_KERN_NORMAL);
		if (tmpctx == NULL)
			return (ENOMEM);
		fpu_kern_enter(curthread, tmpctx, FPU_KERN_NORMAL);
	}

	aesni_set_enckey(key, ctx->enc_schedule, ctx->rounds);
	aesni_set_deckey(ctx->enc_schedule, ctx->dec_schedule, ctx->rounds);
	rijndael_set_key(&ctx->sw, key, keybits);

	if (tmpctx != NULL) {
		fpu_kern_leave(curthread, tmpctx);
		fpu_kern_free_ctx(tmpctx);
	}

	return (0);
}