X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/316670eb35587141e969394ae8537d66b9211e80..cc8bc92ae4a8e9f1a1ab61bf83d34ad8150b3405:/libkern/crypto/corecrypto_aes.c

diff --git a/libkern/crypto/corecrypto_aes.c b/libkern/crypto/corecrypto_aes.c
index 161715af1..3fa1ad333 100644
--- a/libkern/crypto/corecrypto_aes.c
+++ b/libkern/crypto/corecrypto_aes.c
@@ -57,11 +57,13 @@ aes_rval aes_encrypt_cbc(const unsigned char *in_blk, const unsigned char *in_iv
 	return aes_good;
 }
 
+#if defined (__i386__) || defined (__x86_64__) || defined (__arm64__)
 /* This does one block of ECB, using the CBC implementation - this allow to use the same context for both CBC and ECB */
 aes_rval aes_encrypt(const unsigned char *in_blk, unsigned char *out_blk, aes_encrypt_ctx cx[1])
 {
        return aes_encrypt_cbc(in_blk, NULL, 1, out_blk, cx);    
 }
+#endif
 
 aes_rval aes_decrypt_key(const unsigned char *key, int key_len, aes_decrypt_ctx cx[1])
 {
@@ -88,11 +90,13 @@ aes_rval aes_decrypt_cbc(const unsigned char *in_blk, const unsigned char *in_iv
 	return aes_good;
 }
 
+#if defined (__i386__) || defined (__x86_64__) || defined (__arm64__)
 /* This does one block of ECB, using the CBC implementation - this allow to use the same context for both CBC and ECB */
 aes_rval aes_decrypt(const unsigned char *in_blk, unsigned char *out_blk, aes_decrypt_ctx cx[1])
 {
 	return aes_decrypt_cbc(in_blk, NULL, 1, out_blk, cx);
 }
+#endif
 
 aes_rval aes_encrypt_key128(const unsigned char *key, aes_encrypt_ctx cx[1])
 {
@@ -114,3 +118,194 @@ aes_rval aes_decrypt_key256(const unsigned char *key, aes_decrypt_ctx cx[1])
 {
 	return aes_decrypt_key(key, 32, cx);
 }
+
+aes_rval aes_encrypt_key_gcm(const unsigned char *key, int key_len, ccgcm_ctx *ctx)
+{
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_encrypt;
+	if (!gcm) {
+	        return aes_error;
+	}
+
+	return ccgcm_init(gcm, ctx, key_len, key);
+}
+
+aes_rval aes_encrypt_key_with_iv_gcm(const unsigned char *key, int key_len, const unsigned char *in_iv, ccgcm_ctx *ctx)
+{
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_encrypt;
+	if (!gcm) {
+		return aes_error;
+	}
+
+	return g_crypto_funcs->ccgcm_init_with_iv_fn(gcm, ctx, key_len, key, in_iv);
+}
+
+aes_rval aes_encrypt_set_iv_gcm(const unsigned char *in_iv, unsigned int len, ccgcm_ctx *ctx)
+{
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_encrypt;
+	if (!gcm) {
+	        return aes_error;
+	}
+
+	return ccgcm_set_iv(gcm, ctx, len, in_iv);
+}
+
+aes_rval aes_encrypt_reset_gcm(ccgcm_ctx *ctx)
+{
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_encrypt;
+	if (!gcm) {
+		return aes_error;
+	}
+
+	return ccgcm_reset(gcm, ctx);
+}
+
+aes_rval aes_encrypt_inc_iv_gcm(unsigned char *out_iv, ccgcm_ctx *ctx)
+{
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_encrypt;
+	if (!gcm) {
+		return aes_error;
+	}
+
+	return g_crypto_funcs->ccgcm_inc_iv_fn(gcm, ctx, out_iv);
+}
+
+aes_rval aes_encrypt_aad_gcm(const unsigned char *aad, unsigned int aad_bytes, ccgcm_ctx *ctx)
+{
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_encrypt;
+	if (!gcm) {
+	        return aes_error;
+	}
+
+	return ccgcm_gmac(gcm, ctx, aad_bytes, aad);
+}
+
+aes_rval aes_encrypt_gcm(const unsigned char *in_blk, unsigned int num_bytes, 
+			 unsigned char *out_blk, ccgcm_ctx *ctx)
+{
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_encrypt;
+	if (!gcm) {
+	        return aes_error;
+	}
+
+	return ccgcm_update(gcm, ctx, num_bytes, in_blk, out_blk);	//Actually gcm encrypt.
+}
+
+aes_rval aes_encrypt_finalize_gcm(unsigned char *tag, unsigned int tag_bytes, ccgcm_ctx *ctx)
+{
+	int rc;
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_encrypt;
+	if (!gcm) {
+	        return aes_error;
+	}
+
+	rc = ccgcm_finalize(gcm, ctx, tag_bytes, tag);
+	rc |= ccgcm_reset(gcm, ctx);
+	return rc;
+}
+
+aes_rval aes_decrypt_key_gcm(const unsigned char *key, int key_len, ccgcm_ctx *ctx)
+{
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_decrypt;
+	if (!gcm) {
+	        return aes_error;
+	}
+
+	return ccgcm_init(gcm, ctx, key_len, key);
+}
+
+aes_rval aes_decrypt_key_with_iv_gcm(const unsigned char *key, int key_len, const unsigned char *in_iv, ccgcm_ctx *ctx)
+{
+        const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_decrypt;
+        if (!gcm) {
+                return aes_error;
+        }
+
+        return g_crypto_funcs->ccgcm_init_with_iv_fn(gcm, ctx, key_len, key, in_iv);
+}
+
+aes_rval aes_decrypt_set_iv_gcm(const unsigned char *in_iv, unsigned int len, ccgcm_ctx *ctx)
+{
+	int rc;
+
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_decrypt;
+	if (!gcm) {
+	        return aes_error;
+	}
+
+	rc = ccgcm_reset(gcm, ctx);
+	rc |= ccgcm_set_iv(gcm, ctx, len, in_iv);
+	return rc;
+}
+
+aes_rval aes_decrypt_reset_gcm(ccgcm_ctx *ctx)
+{
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_decrypt;
+	if (!gcm) {
+		return aes_error;
+	}
+
+	return ccgcm_reset(gcm, ctx);
+}
+
+aes_rval aes_decrypt_inc_iv_gcm(unsigned char *out_iv, ccgcm_ctx *ctx)
+{
+        const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_decrypt;
+        if (!gcm) {
+                return aes_error;
+        }
+
+        return g_crypto_funcs->ccgcm_inc_iv_fn(gcm, ctx, out_iv);
+}
+
+aes_rval aes_decrypt_aad_gcm(const unsigned char *aad, unsigned int aad_bytes, ccgcm_ctx *ctx)
+{
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_decrypt;
+	if (!gcm) {
+	        return aes_error;
+	}
+
+	return ccgcm_gmac(gcm, ctx, aad_bytes, aad);
+}
+
+aes_rval aes_decrypt_gcm(const unsigned char *in_blk, unsigned int num_bytes,
+			 unsigned char *out_blk, ccgcm_ctx *ctx)
+{
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_decrypt;
+	if (!gcm) {
+	        return aes_error;
+	}
+
+	return ccgcm_update(gcm, ctx, num_bytes, in_blk, out_blk);	//Actually gcm decrypt.
+}
+
+aes_rval aes_decrypt_finalize_gcm(unsigned char *tag, unsigned int tag_bytes, ccgcm_ctx *ctx)
+{
+	int rc;
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_decrypt;
+	if (!gcm) {
+	        return aes_error;
+	}
+
+	rc = ccgcm_finalize(gcm, ctx, tag_bytes, tag);
+	rc |= ccgcm_reset(gcm, ctx);
+	return rc;
+}
+
+unsigned aes_encrypt_get_ctx_size_gcm(void)
+{
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_encrypt;
+	if (!gcm) {
+	        return 0;
+	}
+	return (cc_ctx_sizeof(ccgcm_ctx, gcm->size));
+}
+
+unsigned aes_decrypt_get_ctx_size_gcm(void)
+{
+	const struct ccmode_gcm *gcm = g_crypto_funcs->ccaes_gcm_decrypt;
+	if (!gcm) {
+	        return 0;
+	}
+	return (cc_ctx_sizeof(ccgcm_ctx, gcm->size));
+}
+