| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Minimal library implementation of GCM |
| * |
| * Copyright 2022 Google LLC |
| */ |
| |
| #include <linux/module.h> |
| |
| #include <crypto/algapi.h> |
| #include <crypto/gcm.h> |
| #include <crypto/ghash.h> |
| |
| #include <asm/irqflags.h> |
| |
| static void aesgcm_encrypt_block(const struct crypto_aes_ctx *ctx, void *dst, |
| const void *src) |
| { |
| unsigned long flags; |
| |
| /* |
| * In AES-GCM, both the GHASH key derivation and the CTR mode |
| * encryption operate on known plaintext, making them susceptible to |
| * timing attacks on the encryption key. The AES library already |
| * mitigates this risk to some extent by pulling the entire S-box into |
| * the caches before doing any substitutions, but this strategy is more |
| * effective when running with interrupts disabled. |
| */ |
| local_irq_save(flags); |
| aes_encrypt(ctx, dst, src); |
| local_irq_restore(flags); |
| } |
| |
| /** |
| * aesgcm_expandkey - Expands the AES and GHASH keys for the AES-GCM key |
| * schedule |
| * |
| * @ctx: The data structure that will hold the AES-GCM key schedule |
| * @key: The AES encryption input key |
| * @keysize: The length in bytes of the input key |
| * @authsize: The size in bytes of the GCM authentication tag |
| * |
| * Returns: 0 on success, or -EINVAL if @keysize or @authsize contain values |
| * that are not permitted by the GCM specification. |
| */ |
| int aesgcm_expandkey(struct aesgcm_ctx *ctx, const u8 *key, |
| unsigned int keysize, unsigned int authsize) |
| { |
| u8 kin[AES_BLOCK_SIZE] = {}; |
| int ret; |
| |
| ret = crypto_gcm_check_authsize(authsize) ?: |
| aes_expandkey(&ctx->aes_ctx, key, keysize); |
| if (ret) |
| return ret; |
| |
| ctx->authsize = authsize; |
| aesgcm_encrypt_block(&ctx->aes_ctx, &ctx->ghash_key, kin); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(aesgcm_expandkey); |
| |
| static void aesgcm_ghash(be128 *ghash, const be128 *key, const void *src, |
| int len) |
| { |
| while (len > 0) { |
| crypto_xor((u8 *)ghash, src, min(len, GHASH_BLOCK_SIZE)); |
| gf128mul_lle(ghash, key); |
| |
| src += GHASH_BLOCK_SIZE; |
| len -= GHASH_BLOCK_SIZE; |
| } |
| } |
| |
| static void aesgcm_mac(const struct aesgcm_ctx *ctx, const u8 *src, int src_len, |
| const u8 *assoc, int assoc_len, __be32 *ctr, u8 *authtag) |
| { |
| be128 tail = { cpu_to_be64(assoc_len * 8), cpu_to_be64(src_len * 8) }; |
| u8 buf[AES_BLOCK_SIZE]; |
| be128 ghash = {}; |
| |
| aesgcm_ghash(&ghash, &ctx->ghash_key, assoc, assoc_len); |
| aesgcm_ghash(&ghash, &ctx->ghash_key, src, src_len); |
| aesgcm_ghash(&ghash, &ctx->ghash_key, &tail, sizeof(tail)); |
| |
| ctr[3] = cpu_to_be32(1); |
| aesgcm_encrypt_block(&ctx->aes_ctx, buf, ctr); |
| crypto_xor_cpy(authtag, buf, (u8 *)&ghash, ctx->authsize); |
| |
| memzero_explicit(&ghash, sizeof(ghash)); |
| memzero_explicit(buf, sizeof(buf)); |
| } |
| |
| static void aesgcm_crypt(const struct aesgcm_ctx *ctx, u8 *dst, const u8 *src, |
| int len, __be32 *ctr) |
| { |
| u8 buf[AES_BLOCK_SIZE]; |
| unsigned int n = 2; |
| |
| while (len > 0) { |
| /* |
| * The counter increment below must not result in overflow or |
| * carry into the next 32-bit word, as this could result in |
| * inadvertent IV reuse, which must be avoided at all cost for |
| * stream ciphers such as AES-CTR. Given the range of 'int |
| * len', this cannot happen, so no explicit test is necessary. |
| */ |
| ctr[3] = cpu_to_be32(n++); |
| aesgcm_encrypt_block(&ctx->aes_ctx, buf, ctr); |
| crypto_xor_cpy(dst, src, buf, min(len, AES_BLOCK_SIZE)); |
| |
| dst += AES_BLOCK_SIZE; |
| src += AES_BLOCK_SIZE; |
| len -= AES_BLOCK_SIZE; |
| } |
| memzero_explicit(buf, sizeof(buf)); |
| } |
| |
| /** |
| * aesgcm_encrypt - Perform AES-GCM encryption on a block of data |
| * |
| * @ctx: The AES-GCM key schedule |
| * @dst: Pointer to the ciphertext output buffer |
| * @src: Pointer the plaintext (may equal @dst for encryption in place) |
| * @crypt_len: The size in bytes of the plaintext and ciphertext. |
| * @assoc: Pointer to the associated data, |
| * @assoc_len: The size in bytes of the associated data |
| * @iv: The initialization vector (IV) to use for this block of data |
| * (must be 12 bytes in size as per the GCM spec recommendation) |
| * @authtag: The address of the buffer in memory where the authentication |
| * tag should be stored. The buffer is assumed to have space for |
| * @ctx->authsize bytes. |
| */ |
| void aesgcm_encrypt(const struct aesgcm_ctx *ctx, u8 *dst, const u8 *src, |
| int crypt_len, const u8 *assoc, int assoc_len, |
| const u8 iv[GCM_AES_IV_SIZE], u8 *authtag) |
| { |
| __be32 ctr[4]; |
| |
| memcpy(ctr, iv, GCM_AES_IV_SIZE); |
| |
| aesgcm_crypt(ctx, dst, src, crypt_len, ctr); |
| aesgcm_mac(ctx, dst, crypt_len, assoc, assoc_len, ctr, authtag); |
| } |
| EXPORT_SYMBOL(aesgcm_encrypt); |
| |
| /** |
| * aesgcm_decrypt - Perform AES-GCM decryption on a block of data |
| * |
| * @ctx: The AES-GCM key schedule |
| * @dst: Pointer to the plaintext output buffer |
| * @src: Pointer the ciphertext (may equal @dst for decryption in place) |
| * @crypt_len: The size in bytes of the plaintext and ciphertext. |
| * @assoc: Pointer to the associated data, |
| * @assoc_len: The size in bytes of the associated data |
| * @iv: The initialization vector (IV) to use for this block of data |
| * (must be 12 bytes in size as per the GCM spec recommendation) |
| * @authtag: The address of the buffer in memory where the authentication |
| * tag is stored. |
| * |
| * Returns: true on success, or false if the ciphertext failed authentication. |
| * On failure, no plaintext will be returned. |
| */ |
| bool __must_check aesgcm_decrypt(const struct aesgcm_ctx *ctx, u8 *dst, |
| const u8 *src, int crypt_len, const u8 *assoc, |
| int assoc_len, const u8 iv[GCM_AES_IV_SIZE], |
| const u8 *authtag) |
| { |
| u8 tagbuf[AES_BLOCK_SIZE]; |
| __be32 ctr[4]; |
| |
| memcpy(ctr, iv, GCM_AES_IV_SIZE); |
| |
| aesgcm_mac(ctx, src, crypt_len, assoc, assoc_len, ctr, tagbuf); |
| if (crypto_memneq(authtag, tagbuf, ctx->authsize)) { |
| memzero_explicit(tagbuf, sizeof(tagbuf)); |
| return false; |
| } |
| aesgcm_crypt(ctx, dst, src, crypt_len, ctr); |
| return true; |
| } |
| EXPORT_SYMBOL(aesgcm_decrypt); |
| |
| MODULE_DESCRIPTION("Generic AES-GCM library"); |
| MODULE_AUTHOR("Ard Biesheuvel <ardb@kernel.org>"); |
| MODULE_LICENSE("GPL"); |
| |
| #ifndef CONFIG_CRYPTO_MANAGER_DISABLE_TESTS |
| |
| /* |
| * Test code below. Vectors taken from crypto/testmgr.h |
| */ |
| |
| static const u8 __initconst ctext0[16] = |
| "\x58\xe2\xfc\xce\xfa\x7e\x30\x61" |
| "\x36\x7f\x1d\x57\xa4\xe7\x45\x5a"; |
| |
| static const u8 __initconst ptext1[16]; |
| |
| static const u8 __initconst ctext1[32] = |
| "\x03\x88\xda\xce\x60\xb6\xa3\x92" |
| "\xf3\x28\xc2\xb9\x71\xb2\xfe\x78" |
| "\xab\x6e\x47\xd4\x2c\xec\x13\xbd" |
| "\xf5\x3a\x67\xb2\x12\x57\xbd\xdf"; |
| |
| static const u8 __initconst ptext2[64] = |
| "\xd9\x31\x32\x25\xf8\x84\x06\xe5" |
| "\xa5\x59\x09\xc5\xaf\xf5\x26\x9a" |
| "\x86\xa7\xa9\x53\x15\x34\xf7\xda" |
| "\x2e\x4c\x30\x3d\x8a\x31\x8a\x72" |
| "\x1c\x3c\x0c\x95\x95\x68\x09\x53" |
| "\x2f\xcf\x0e\x24\x49\xa6\xb5\x25" |
| "\xb1\x6a\xed\xf5\xaa\x0d\xe6\x57" |
| "\xba\x63\x7b\x39\x1a\xaf\xd2\x55"; |
| |
| static const u8 __initconst ctext2[80] = |
| "\x42\x83\x1e\xc2\x21\x77\x74\x24" |
| "\x4b\x72\x21\xb7\x84\xd0\xd4\x9c" |
| "\xe3\xaa\x21\x2f\x2c\x02\xa4\xe0" |
| "\x35\xc1\x7e\x23\x29\xac\xa1\x2e" |
| "\x21\xd5\x14\xb2\x54\x66\x93\x1c" |
| "\x7d\x8f\x6a\x5a\xac\x84\xaa\x05" |
| "\x1b\xa3\x0b\x39\x6a\x0a\xac\x97" |
| "\x3d\x58\xe0\x91\x47\x3f\x59\x85" |
| "\x4d\x5c\x2a\xf3\x27\xcd\x64\xa6" |
| "\x2c\xf3\x5a\xbd\x2b\xa6\xfa\xb4"; |
| |
| static const u8 __initconst ptext3[60] = |
| "\xd9\x31\x32\x25\xf8\x84\x06\xe5" |
| "\xa5\x59\x09\xc5\xaf\xf5\x26\x9a" |
| "\x86\xa7\xa9\x53\x15\x34\xf7\xda" |
| "\x2e\x4c\x30\x3d\x8a\x31\x8a\x72" |
| "\x1c\x3c\x0c\x95\x95\x68\x09\x53" |
| "\x2f\xcf\x0e\x24\x49\xa6\xb5\x25" |
| "\xb1\x6a\xed\xf5\xaa\x0d\xe6\x57" |
| "\xba\x63\x7b\x39"; |
| |
| static const u8 __initconst ctext3[76] = |
| "\x42\x83\x1e\xc2\x21\x77\x74\x24" |
| "\x4b\x72\x21\xb7\x84\xd0\xd4\x9c" |
| "\xe3\xaa\x21\x2f\x2c\x02\xa4\xe0" |
| "\x35\xc1\x7e\x23\x29\xac\xa1\x2e" |
| "\x21\xd5\x14\xb2\x54\x66\x93\x1c" |
| "\x7d\x8f\x6a\x5a\xac\x84\xaa\x05" |
| "\x1b\xa3\x0b\x39\x6a\x0a\xac\x97" |
| "\x3d\x58\xe0\x91" |
| "\x5b\xc9\x4f\xbc\x32\x21\xa5\xdb" |
| "\x94\xfa\xe9\x5a\xe7\x12\x1a\x47"; |
| |
| static const u8 __initconst ctext4[16] = |
| "\xcd\x33\xb2\x8a\xc7\x73\xf7\x4b" |
| "\xa0\x0e\xd1\xf3\x12\x57\x24\x35"; |
| |
| static const u8 __initconst ctext5[32] = |
| "\x98\xe7\x24\x7c\x07\xf0\xfe\x41" |
| "\x1c\x26\x7e\x43\x84\xb0\xf6\x00" |
| "\x2f\xf5\x8d\x80\x03\x39\x27\xab" |
| "\x8e\xf4\xd4\x58\x75\x14\xf0\xfb"; |
| |
| static const u8 __initconst ptext6[64] = |
| "\xd9\x31\x32\x25\xf8\x84\x06\xe5" |
| "\xa5\x59\x09\xc5\xaf\xf5\x26\x9a" |
| "\x86\xa7\xa9\x53\x15\x34\xf7\xda" |
| "\x2e\x4c\x30\x3d\x8a\x31\x8a\x72" |
| "\x1c\x3c\x0c\x95\x95\x68\x09\x53" |
| "\x2f\xcf\x0e\x24\x49\xa6\xb5\x25" |
| "\xb1\x6a\xed\xf5\xaa\x0d\xe6\x57" |
| "\xba\x63\x7b\x39\x1a\xaf\xd2\x55"; |
| |
| static const u8 __initconst ctext6[80] = |
| "\x39\x80\xca\x0b\x3c\x00\xe8\x41" |
| "\xeb\x06\xfa\xc4\x87\x2a\x27\x57" |
| "\x85\x9e\x1c\xea\xa6\xef\xd9\x84" |
| "\x62\x85\x93\xb4\x0c\xa1\xe1\x9c" |
| "\x7d\x77\x3d\x00\xc1\x44\xc5\x25" |
| "\xac\x61\x9d\x18\xc8\x4a\x3f\x47" |
| "\x18\xe2\x44\x8b\x2f\xe3\x24\xd9" |
| "\xcc\xda\x27\x10\xac\xad\xe2\x56" |
| "\x99\x24\xa7\xc8\x58\x73\x36\xbf" |
| "\xb1\x18\x02\x4d\xb8\x67\x4a\x14"; |
| |
| static const u8 __initconst ctext7[16] = |
| "\x53\x0f\x8a\xfb\xc7\x45\x36\xb9" |
| "\xa9\x63\xb4\xf1\xc4\xcb\x73\x8b"; |
| |
| static const u8 __initconst ctext8[32] = |
| "\xce\xa7\x40\x3d\x4d\x60\x6b\x6e" |
| "\x07\x4e\xc5\xd3\xba\xf3\x9d\x18" |
| "\xd0\xd1\xc8\xa7\x99\x99\x6b\xf0" |
| "\x26\x5b\x98\xb5\xd4\x8a\xb9\x19"; |
| |
| static const u8 __initconst ptext9[64] = |
| "\xd9\x31\x32\x25\xf8\x84\x06\xe5" |
| "\xa5\x59\x09\xc5\xaf\xf5\x26\x9a" |
| "\x86\xa7\xa9\x53\x15\x34\xf7\xda" |
| "\x2e\x4c\x30\x3d\x8a\x31\x8a\x72" |
| "\x1c\x3c\x0c\x95\x95\x68\x09\x53" |
| "\x2f\xcf\x0e\x24\x49\xa6\xb5\x25" |
| "\xb1\x6a\xed\xf5\xaa\x0d\xe6\x57" |
| "\xba\x63\x7b\x39\x1a\xaf\xd2\x55"; |
| |
| static const u8 __initconst ctext9[80] = |
| "\x52\x2d\xc1\xf0\x99\x56\x7d\x07" |
| "\xf4\x7f\x37\xa3\x2a\x84\x42\x7d" |
| "\x64\x3a\x8c\xdc\xbf\xe5\xc0\xc9" |
| "\x75\x98\xa2\xbd\x25\x55\xd1\xaa" |
| "\x8c\xb0\x8e\x48\x59\x0d\xbb\x3d" |
| "\xa7\xb0\x8b\x10\x56\x82\x88\x38" |
| "\xc5\xf6\x1e\x63\x93\xba\x7a\x0a" |
| "\xbc\xc9\xf6\x62\x89\x80\x15\xad" |
| "\xb0\x94\xda\xc5\xd9\x34\x71\xbd" |
| "\xec\x1a\x50\x22\x70\xe3\xcc\x6c"; |
| |
| static const u8 __initconst ptext10[60] = |
| "\xd9\x31\x32\x25\xf8\x84\x06\xe5" |
| "\xa5\x59\x09\xc5\xaf\xf5\x26\x9a" |
| "\x86\xa7\xa9\x53\x15\x34\xf7\xda" |
| "\x2e\x4c\x30\x3d\x8a\x31\x8a\x72" |
| "\x1c\x3c\x0c\x95\x95\x68\x09\x53" |
| "\x2f\xcf\x0e\x24\x49\xa6\xb5\x25" |
| "\xb1\x6a\xed\xf5\xaa\x0d\xe6\x57" |
| "\xba\x63\x7b\x39"; |
| |
| static const u8 __initconst ctext10[76] = |
| "\x52\x2d\xc1\xf0\x99\x56\x7d\x07" |
| "\xf4\x7f\x37\xa3\x2a\x84\x42\x7d" |
| "\x64\x3a\x8c\xdc\xbf\xe5\xc0\xc9" |
| "\x75\x98\xa2\xbd\x25\x55\xd1\xaa" |
| "\x8c\xb0\x8e\x48\x59\x0d\xbb\x3d" |
| "\xa7\xb0\x8b\x10\x56\x82\x88\x38" |
| "\xc5\xf6\x1e\x63\x93\xba\x7a\x0a" |
| "\xbc\xc9\xf6\x62" |
| "\x76\xfc\x6e\xce\x0f\x4e\x17\x68" |
| "\xcd\xdf\x88\x53\xbb\x2d\x55\x1b"; |
| |
| static const u8 __initconst ptext11[60] = |
| "\xd9\x31\x32\x25\xf8\x84\x06\xe5" |
| "\xa5\x59\x09\xc5\xaf\xf5\x26\x9a" |
| "\x86\xa7\xa9\x53\x15\x34\xf7\xda" |
| "\x2e\x4c\x30\x3d\x8a\x31\x8a\x72" |
| "\x1c\x3c\x0c\x95\x95\x68\x09\x53" |
| "\x2f\xcf\x0e\x24\x49\xa6\xb5\x25" |
| "\xb1\x6a\xed\xf5\xaa\x0d\xe6\x57" |
| "\xba\x63\x7b\x39"; |
| |
| static const u8 __initconst ctext11[76] = |
| "\x39\x80\xca\x0b\x3c\x00\xe8\x41" |
| "\xeb\x06\xfa\xc4\x87\x2a\x27\x57" |
| "\x85\x9e\x1c\xea\xa6\xef\xd9\x84" |
| "\x62\x85\x93\xb4\x0c\xa1\xe1\x9c" |
| "\x7d\x77\x3d\x00\xc1\x44\xc5\x25" |
| "\xac\x61\x9d\x18\xc8\x4a\x3f\x47" |
| "\x18\xe2\x44\x8b\x2f\xe3\x24\xd9" |
| "\xcc\xda\x27\x10" |
| "\x25\x19\x49\x8e\x80\xf1\x47\x8f" |
| "\x37\xba\x55\xbd\x6d\x27\x61\x8c"; |
| |
| static const u8 __initconst ptext12[719] = |
| "\x42\xc1\xcc\x08\x48\x6f\x41\x3f" |
| "\x2f\x11\x66\x8b\x2a\x16\xf0\xe0" |
| "\x58\x83\xf0\xc3\x70\x14\xc0\x5b" |
| "\x3f\xec\x1d\x25\x3c\x51\xd2\x03" |
| "\xcf\x59\x74\x1f\xb2\x85\xb4\x07" |
| "\xc6\x6a\x63\x39\x8a\x5b\xde\xcb" |
| "\xaf\x08\x44\xbd\x6f\x91\x15\xe1" |
| "\xf5\x7a\x6e\x18\xbd\xdd\x61\x50" |
| "\x59\xa9\x97\xab\xbb\x0e\x74\x5c" |
| "\x00\xa4\x43\x54\x04\x54\x9b\x3b" |
| "\x77\xec\xfd\x5c\xa6\xe8\x7b\x08" |
| "\xae\xe6\x10\x3f\x32\x65\xd1\xfc" |
| "\xa4\x1d\x2c\x31\xfb\x33\x7a\xb3" |
| "\x35\x23\xf4\x20\x41\xd4\xad\x82" |
| "\x8b\xa4\xad\x96\x1c\x20\x53\xbe" |
| "\x0e\xa6\xf4\xdc\x78\x49\x3e\x72" |
| "\xb1\xa9\xb5\x83\xcb\x08\x54\xb7" |
| "\xad\x49\x3a\xae\x98\xce\xa6\x66" |
| "\x10\x30\x90\x8c\x55\x83\xd7\x7c" |
| "\x8b\xe6\x53\xde\xd2\x6e\x18\x21" |
| "\x01\x52\xd1\x9f\x9d\xbb\x9c\x73" |
| "\x57\xcc\x89\x09\x75\x9b\x78\x70" |
| "\xed\x26\x97\x4d\xb4\xe4\x0c\xa5" |
| "\xfa\x70\x04\x70\xc6\x96\x1c\x7d" |
| "\x54\x41\x77\xa8\xe3\xb0\x7e\x96" |
| "\x82\xd9\xec\xa2\x87\x68\x55\xf9" |
| "\x8f\x9e\x73\x43\x47\x6a\x08\x36" |
| "\x93\x67\xa8\x2d\xde\xac\x41\xa9" |
| "\x5c\x4d\x73\x97\x0f\x70\x68\xfa" |
| "\x56\x4d\x00\xc2\x3b\x1f\xc8\xb9" |
| "\x78\x1f\x51\x07\xe3\x9a\x13\x4e" |
| "\xed\x2b\x2e\xa3\xf7\x44\xb2\xe7" |
| "\xab\x19\x37\xd9\xba\x76\x5e\xd2" |
| "\xf2\x53\x15\x17\x4c\x6b\x16\x9f" |
| "\x02\x66\x49\xca\x7c\x91\x05\xf2" |
| "\x45\x36\x1e\xf5\x77\xad\x1f\x46" |
| "\xa8\x13\xfb\x63\xb6\x08\x99\x63" |
| "\x82\xa2\xed\xb3\xac\xdf\x43\x19" |
| "\x45\xea\x78\x73\xd9\xb7\x39\x11" |
| "\xa3\x13\x7c\xf8\x3f\xf7\xad\x81" |
| "\x48\x2f\xa9\x5c\x5f\xa0\xf0\x79" |
| "\xa4\x47\x7d\x80\x20\x26\xfd\x63" |
| "\x0a\xc7\x7e\x6d\x75\x47\xff\x76" |
| "\x66\x2e\x8a\x6c\x81\x35\xaf\x0b" |
| "\x2e\x6a\x49\x60\xc1\x10\xe1\xe1" |
| "\x54\x03\xa4\x09\x0c\x37\x7a\x15" |
| "\x23\x27\x5b\x8b\x4b\xa5\x64\x97" |
| "\xae\x4a\x50\x73\x1f\x66\x1c\x5c" |
| "\x03\x25\x3c\x8d\x48\x58\x71\x34" |
| "\x0e\xec\x4e\x55\x1a\x03\x6a\xe5" |
| "\xb6\x19\x2b\x84\x2a\x20\xd1\xea" |
| "\x80\x6f\x96\x0e\x05\x62\xc7\x78" |
| "\x87\x79\x60\x38\x46\xb4\x25\x57" |
| "\x6e\x16\x63\xf8\xad\x6e\xd7\x42" |
| "\x69\xe1\x88\xef\x6e\xd5\xb4\x9a" |
| "\x3c\x78\x6c\x3b\xe5\xa0\x1d\x22" |
| "\x86\x5c\x74\x3a\xeb\x24\x26\xc7" |
| "\x09\xfc\x91\x96\x47\x87\x4f\x1a" |
| "\xd6\x6b\x2c\x18\x47\xc0\xb8\x24" |
| "\xa8\x5a\x4a\x9e\xcb\x03\xe7\x2a" |
| "\x09\xe6\x4d\x9c\x6d\x86\x60\xf5" |
| "\x2f\x48\x69\x37\x9f\xf2\xd2\xcb" |
| "\x0e\x5a\xdd\x6e\x8a\xfb\x6a\xfe" |
| "\x0b\x63\xde\x87\x42\x79\x8a\x68" |
| "\x51\x28\x9b\x7a\xeb\xaf\xb8\x2f" |
| "\x9d\xd1\xc7\x45\x90\x08\xc9\x83" |
| "\xe9\x83\x84\xcb\x28\x69\x09\x69" |
| "\xce\x99\x46\x00\x54\xcb\xd8\x38" |
| "\xf9\x53\x4a\xbf\x31\xce\x57\x15" |
| "\x33\xfa\x96\x04\x33\x42\xe3\xc0" |
| "\xb7\x54\x4a\x65\x7a\x7c\x02\xe6" |
| "\x19\x95\xd0\x0e\x82\x07\x63\xf9" |
| "\xe1\x2b\x2a\xfc\x55\x92\x52\xc9" |
| "\xb5\x9f\x23\x28\x60\xe7\x20\x51" |
| "\x10\xd3\xed\x6d\x9b\xab\xb8\xe2" |
| "\x5d\x9a\x34\xb3\xbe\x9c\x64\xcb" |
| "\x78\xc6\x91\x22\x40\x91\x80\xbe" |
| "\xd7\x78\x5c\x0e\x0a\xdc\x08\xe9" |
| "\x67\x10\xa4\x83\x98\x79\x23\xe7" |
| "\x92\xda\xa9\x22\x16\xb1\xe7\x78" |
| "\xa3\x1c\x6c\x8f\x35\x7c\x4d\x37" |
| "\x2f\x6e\x0b\x50\x5c\x34\xb9\xf9" |
| "\xe6\x3d\x91\x0d\x32\x95\xaa\x3d" |
| "\x48\x11\x06\xbb\x2d\xf2\x63\x88" |
| "\x3f\x73\x09\xe2\x45\x56\x31\x51" |
| "\xfa\x5e\x4e\x62\xf7\x90\xf9\xa9" |
| "\x7d\x7b\x1b\xb1\xc8\x26\x6e\x66" |
| "\xf6\x90\x9a\x7f\xf2\x57\xcc\x23" |
| "\x59\xfa\xfa\xaa\x44\x04\x01\xa7" |
| "\xa4\x78\xdb\x74\x3d\x8b\xb5"; |
| |
| static const u8 __initconst ctext12[735] = |
| "\x84\x0b\xdb\xd5\xb7\xa8\xfe\x20" |
| "\xbb\xb1\x12\x7f\x41\xea\xb3\xc0" |
| "\xa2\xb4\x37\x19\x11\x58\xb6\x0b" |
| "\x4c\x1d\x38\x05\x54\xd1\x16\x73" |
| "\x8e\x1c\x20\x90\xa2\x9a\xb7\x74" |
| "\x47\xe6\xd8\xfc\x18\x3a\xb4\xea" |
| "\xd5\x16\x5a\x2c\x53\x01\x46\xb3" |
| "\x18\x33\x74\x6c\x50\xf2\xe8\xc0" |
| "\x73\xda\x60\x22\xeb\xe3\xe5\x9b" |
| "\x20\x93\x6c\x4b\x37\x99\xb8\x23" |
| "\x3b\x4e\xac\xe8\x5b\xe8\x0f\xb7" |
| "\xc3\x8f\xfb\x4a\x37\xd9\x39\x95" |
| "\x34\xf1\xdb\x8f\x71\xd9\xc7\x0b" |
| "\x02\xf1\x63\xfc\x9b\xfc\xc5\xab" |
| "\xb9\x14\x13\x21\xdf\xce\xaa\x88" |
| "\x44\x30\x1e\xce\x26\x01\x92\xf8" |
| "\x9f\x00\x4b\x0c\x4b\xf7\x5f\xe0" |
| "\x89\xca\x94\x66\x11\x21\x97\xca" |
| "\x3e\x83\x74\x2d\xdb\x4d\x11\xeb" |
| "\x97\xc2\x14\xff\x9e\x1e\xa0\x6b" |
| "\x08\xb4\x31\x2b\x85\xc6\x85\x6c" |
| "\x90\xec\x39\xc0\xec\xb3\xb5\x4e" |
| "\xf3\x9c\xe7\x83\x3a\x77\x0a\xf4" |
| "\x56\xfe\xce\x18\x33\x6d\x0b\x2d" |
| "\x33\xda\xc8\x05\x5c\xb4\x09\x2a" |
| "\xde\x6b\x52\x98\x01\xef\x36\x3d" |
| "\xbd\xf9\x8f\xa8\x3e\xaa\xcd\xd1" |
| "\x01\x2d\x42\x49\xc3\xb6\x84\xbb" |
| "\x48\x96\xe0\x90\x93\x6c\x48\x64" |
| "\xd4\xfa\x7f\x93\x2c\xa6\x21\xc8" |
| "\x7a\x23\x7b\xaa\x20\x56\x12\xae" |
| "\x16\x9d\x94\x0f\x54\xa1\xec\xca" |
| "\x51\x4e\xf2\x39\xf4\xf8\x5f\x04" |
| "\x5a\x0d\xbf\xf5\x83\xa1\x15\xe1" |
| "\xf5\x3c\xd8\x62\xa3\xed\x47\x89" |
| "\x85\x4c\xe5\xdb\xac\x9e\x17\x1d" |
| "\x0c\x09\xe3\x3e\x39\x5b\x4d\x74" |
| "\x0e\xf5\x34\xee\x70\x11\x4c\xfd" |
| "\xdb\x34\xb1\xb5\x10\x3f\x73\xb7" |
| "\xf5\xfa\xed\xb0\x1f\xa5\xcd\x3c" |
| "\x8d\x35\x83\xd4\x11\x44\x6e\x6c" |
| "\x5b\xe0\x0e\x69\xa5\x39\xe5\xbb" |
| "\xa9\x57\x24\x37\xe6\x1f\xdd\xcf" |
| "\x16\x2a\x13\xf9\x6a\x2d\x90\xa0" |
| "\x03\x60\x7a\xed\x69\xd5\x00\x8b" |
| "\x7e\x4f\xcb\xb9\xfa\x91\xb9\x37" |
| "\xc1\x26\xce\x90\x97\x22\x64\x64" |
| "\xc1\x72\x43\x1b\xf6\xac\xc1\x54" |
| "\x8a\x10\x9c\xdd\x8d\xd5\x8e\xb2" |
| "\xe4\x85\xda\xe0\x20\x5f\xf4\xb4" |
| "\x15\xb5\xa0\x8d\x12\x74\x49\x23" |
| "\x3a\xdf\x4a\xd3\xf0\x3b\x89\xeb" |
| "\xf8\xcc\x62\x7b\xfb\x93\x07\x41" |
| "\x61\x26\x94\x58\x70\xa6\x3c\xe4" |
| "\xff\x58\xc4\x13\x3d\xcb\x36\x6b" |
| "\x32\xe5\xb2\x6d\x03\x74\x6f\x76" |
| "\x93\x77\xde\x48\xc4\xfa\x30\x4a" |
| "\xda\x49\x80\x77\x0f\x1c\xbe\x11" |
| "\xc8\x48\xb1\xe5\xbb\xf2\x8a\xe1" |
| "\x96\x2f\x9f\xd1\x8e\x8a\x5c\xe2" |
| "\xf7\xd7\xd8\x54\xf3\x3f\xc4\x91" |
| "\xb8\xfb\x86\xdc\x46\x24\x91\x60" |
| "\x6c\x2f\xc9\x41\x37\x51\x49\x54" |
| "\x09\x81\x21\xf3\x03\x9f\x2b\xe3" |
| "\x1f\x39\x63\xaf\xf4\xd7\x53\x60" |
| "\xa7\xc7\x54\xf9\xee\xb1\xb1\x7d" |
| "\x75\x54\x65\x93\xfe\xb1\x68\x6b" |
| "\x57\x02\xf9\xbb\x0e\xf9\xf8\xbf" |
| "\x01\x12\x27\xb4\xfe\xe4\x79\x7a" |
| "\x40\x5b\x51\x4b\xdf\x38\xec\xb1" |
| "\x6a\x56\xff\x35\x4d\x42\x33\xaa" |
| "\x6f\x1b\xe4\xdc\xe0\xdb\x85\x35" |
| "\x62\x10\xd4\xec\xeb\xc5\x7e\x45" |
| "\x1c\x6f\x17\xca\x3b\x8e\x2d\x66" |
| "\x4f\x4b\x36\x56\xcd\x1b\x59\xaa" |
| "\xd2\x9b\x17\xb9\x58\xdf\x7b\x64" |
| "\x8a\xff\x3b\x9c\xa6\xb5\x48\x9e" |
| "\xaa\xe2\x5d\x09\x71\x32\x5f\xb6" |
| "\x29\xbe\xe7\xc7\x52\x7e\x91\x82" |
| "\x6b\x6d\x33\xe1\x34\x06\x36\x21" |
| "\x5e\xbe\x1e\x2f\x3e\xc1\xfb\xea" |
| "\x49\x2c\xb5\xca\xf7\xb0\x37\xea" |
| "\x1f\xed\x10\x04\xd9\x48\x0d\x1a" |
| "\x1c\xfb\xe7\x84\x0e\x83\x53\x74" |
| "\xc7\x65\xe2\x5c\xe5\xba\x73\x4c" |
| "\x0e\xe1\xb5\x11\x45\x61\x43\x46" |
| "\xaa\x25\x8f\xbd\x85\x08\xfa\x4c" |
| "\x15\xc1\xc0\xd8\xf5\xdc\x16\xbb" |
| "\x7b\x1d\xe3\x87\x57\xa7\x2a\x1d" |
| "\x38\x58\x9e\x8a\x43\xdc\x57" |
| "\xd1\x81\x7d\x2b\xe9\xff\x99\x3a" |
| "\x4b\x24\x52\x58\x55\xe1\x49\x14"; |
| |
| static struct { |
| const u8 *ptext; |
| const u8 *ctext; |
| |
| u8 key[AES_MAX_KEY_SIZE]; |
| u8 iv[GCM_AES_IV_SIZE]; |
| u8 assoc[20]; |
| |
| int klen; |
| int clen; |
| int plen; |
| int alen; |
| } const aesgcm_tv[] __initconst = { |
| { /* From McGrew & Viega - http://citeseer.ist.psu.edu/656989.html */ |
| .klen = 16, |
| .ctext = ctext0, |
| .clen = sizeof(ctext0), |
| }, { |
| .klen = 16, |
| .ptext = ptext1, |
| .plen = sizeof(ptext1), |
| .ctext = ctext1, |
| .clen = sizeof(ctext1), |
| }, { |
| .key = "\xfe\xff\xe9\x92\x86\x65\x73\x1c" |
| "\x6d\x6a\x8f\x94\x67\x30\x83\x08", |
| .klen = 16, |
| .iv = "\xca\xfe\xba\xbe\xfa\xce\xdb\xad" |
| "\xde\xca\xf8\x88", |
| .ptext = ptext2, |
| .plen = sizeof(ptext2), |
| .ctext = ctext2, |
| .clen = sizeof(ctext2), |
| }, { |
| .key = "\xfe\xff\xe9\x92\x86\x65\x73\x1c" |
| "\x6d\x6a\x8f\x94\x67\x30\x83\x08", |
| .klen = 16, |
| .iv = "\xca\xfe\xba\xbe\xfa\xce\xdb\xad" |
| "\xde\xca\xf8\x88", |
| .ptext = ptext3, |
| .plen = sizeof(ptext3), |
| .assoc = "\xfe\xed\xfa\xce\xde\xad\xbe\xef" |
| "\xfe\xed\xfa\xce\xde\xad\xbe\xef" |
| "\xab\xad\xda\xd2", |
| .alen = 20, |
| .ctext = ctext3, |
| .clen = sizeof(ctext3), |
| }, { |
| .klen = 24, |
| .ctext = ctext4, |
| .clen = sizeof(ctext4), |
| }, { |
| .klen = 24, |
| .ptext = ptext1, |
| .plen = sizeof(ptext1), |
| .ctext = ctext5, |
| .clen = sizeof(ctext5), |
| }, { |
| .key = "\xfe\xff\xe9\x92\x86\x65\x73\x1c" |
| "\x6d\x6a\x8f\x94\x67\x30\x83\x08" |
| "\xfe\xff\xe9\x92\x86\x65\x73\x1c", |
| .klen = 24, |
| .iv = "\xca\xfe\xba\xbe\xfa\xce\xdb\xad" |
| "\xde\xca\xf8\x88", |
| .ptext = ptext6, |
| .plen = sizeof(ptext6), |
| .ctext = ctext6, |
| .clen = sizeof(ctext6), |
| }, { |
| .klen = 32, |
| .ctext = ctext7, |
| .clen = sizeof(ctext7), |
| }, { |
| .klen = 32, |
| .ptext = ptext1, |
| .plen = sizeof(ptext1), |
| .ctext = ctext8, |
| .clen = sizeof(ctext8), |
| }, { |
| .key = "\xfe\xff\xe9\x92\x86\x65\x73\x1c" |
| "\x6d\x6a\x8f\x94\x67\x30\x83\x08" |
| "\xfe\xff\xe9\x92\x86\x65\x73\x1c" |
| "\x6d\x6a\x8f\x94\x67\x30\x83\x08", |
| .klen = 32, |
| .iv = "\xca\xfe\xba\xbe\xfa\xce\xdb\xad" |
| "\xde\xca\xf8\x88", |
| .ptext = ptext9, |
| .plen = sizeof(ptext9), |
| .ctext = ctext9, |
| .clen = sizeof(ctext9), |
| }, { |
| .key = "\xfe\xff\xe9\x92\x86\x65\x73\x1c" |
| "\x6d\x6a\x8f\x94\x67\x30\x83\x08" |
| "\xfe\xff\xe9\x92\x86\x65\x73\x1c" |
| "\x6d\x6a\x8f\x94\x67\x30\x83\x08", |
| .klen = 32, |
| .iv = "\xca\xfe\xba\xbe\xfa\xce\xdb\xad" |
| "\xde\xca\xf8\x88", |
| .ptext = ptext10, |
| .plen = sizeof(ptext10), |
| .assoc = "\xfe\xed\xfa\xce\xde\xad\xbe\xef" |
| "\xfe\xed\xfa\xce\xde\xad\xbe\xef" |
| "\xab\xad\xda\xd2", |
| .alen = 20, |
| .ctext = ctext10, |
| .clen = sizeof(ctext10), |
| }, { |
| .key = "\xfe\xff\xe9\x92\x86\x65\x73\x1c" |
| "\x6d\x6a\x8f\x94\x67\x30\x83\x08" |
| "\xfe\xff\xe9\x92\x86\x65\x73\x1c", |
| .klen = 24, |
| .iv = "\xca\xfe\xba\xbe\xfa\xce\xdb\xad" |
| "\xde\xca\xf8\x88", |
| .ptext = ptext11, |
| .plen = sizeof(ptext11), |
| .assoc = "\xfe\xed\xfa\xce\xde\xad\xbe\xef" |
| "\xfe\xed\xfa\xce\xde\xad\xbe\xef" |
| "\xab\xad\xda\xd2", |
| .alen = 20, |
| .ctext = ctext11, |
| .clen = sizeof(ctext11), |
| }, { |
| .key = "\x62\x35\xf8\x95\xfc\xa5\xeb\xf6" |
| "\x0e\x92\x12\x04\xd3\xa1\x3f\x2e" |
| "\x8b\x32\xcf\xe7\x44\xed\x13\x59" |
| "\x04\x38\x77\xb0\xb9\xad\xb4\x38", |
| .klen = 32, |
| .iv = "\x00\xff\xff\xff\xff\x00\x00\xff" |
| "\xff\xff\x00\xff", |
| .ptext = ptext12, |
| .plen = sizeof(ptext12), |
| .ctext = ctext12, |
| .clen = sizeof(ctext12), |
| } |
| }; |
| |
| static int __init libaesgcm_init(void) |
| { |
| for (int i = 0; i < ARRAY_SIZE(aesgcm_tv); i++) { |
| u8 tagbuf[AES_BLOCK_SIZE]; |
| int plen = aesgcm_tv[i].plen; |
| struct aesgcm_ctx ctx; |
| u8 buf[sizeof(ptext12)]; |
| |
| if (aesgcm_expandkey(&ctx, aesgcm_tv[i].key, aesgcm_tv[i].klen, |
| aesgcm_tv[i].clen - plen)) { |
| pr_err("aesgcm_expandkey() failed on vector %d\n", i); |
| return -ENODEV; |
| } |
| |
| if (!aesgcm_decrypt(&ctx, buf, aesgcm_tv[i].ctext, plen, |
| aesgcm_tv[i].assoc, aesgcm_tv[i].alen, |
| aesgcm_tv[i].iv, aesgcm_tv[i].ctext + plen) |
| || memcmp(buf, aesgcm_tv[i].ptext, plen)) { |
| pr_err("aesgcm_decrypt() #1 failed on vector %d\n", i); |
| return -ENODEV; |
| } |
| |
| /* encrypt in place */ |
| aesgcm_encrypt(&ctx, buf, buf, plen, aesgcm_tv[i].assoc, |
| aesgcm_tv[i].alen, aesgcm_tv[i].iv, tagbuf); |
| if (memcmp(buf, aesgcm_tv[i].ctext, plen)) { |
| pr_err("aesgcm_encrypt() failed on vector %d\n", i); |
| return -ENODEV; |
| } |
| |
| /* decrypt in place */ |
| if (!aesgcm_decrypt(&ctx, buf, buf, plen, aesgcm_tv[i].assoc, |
| aesgcm_tv[i].alen, aesgcm_tv[i].iv, tagbuf) |
| || memcmp(buf, aesgcm_tv[i].ptext, plen)) { |
| pr_err("aesgcm_decrypt() #2 failed on vector %d\n", i); |
| return -ENODEV; |
| } |
| } |
| return 0; |
| } |
| module_init(libaesgcm_init); |
| |
| static void __exit libaesgcm_exit(void) |
| { |
| } |
| module_exit(libaesgcm_exit); |
| #endif |
