diff options
Diffstat (limited to 'providers/implementations/ciphers/cipher_chacha20_poly1305.h')
-rw-r--r-- | providers/implementations/ciphers/cipher_chacha20_poly1305.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/providers/implementations/ciphers/cipher_chacha20_poly1305.h b/providers/implementations/ciphers/cipher_chacha20_poly1305.h new file mode 100644 index 0000000000..00b173d1ed --- /dev/null +++ b/providers/implementations/ciphers/cipher_chacha20_poly1305.h @@ -0,0 +1,43 @@ +/* + * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the Apache License 2.0 (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +/* Dispatch functions for chacha20_poly1305 cipher */ + +#include "include/crypto/poly1305.h" +#include "cipher_chacha20.h" + +#define NO_TLS_PAYLOAD_LENGTH ((size_t)-1) +#define CHACHA20_POLY1305_IVLEN 12 + +typedef struct { + PROV_CIPHER_CTX base; /* must be first */ + PROV_CHACHA20_CTX chacha; + POLY1305 poly1305; + unsigned int nonce[12 / 4]; + unsigned char tag[POLY1305_BLOCK_SIZE]; + unsigned char tls_aad[POLY1305_BLOCK_SIZE]; + struct { uint64_t aad, text; } len; + unsigned int aad : 1; + unsigned int mac_inited : 1; + size_t tag_len, nonce_len; + size_t tls_payload_length; + size_t tls_aad_pad_sz; +} PROV_CHACHA20_POLY1305_CTX; + +typedef struct prov_cipher_hw_chacha_aead_st { + PROV_CIPHER_HW base; /* must be first */ + int (*aead_cipher)(PROV_CIPHER_CTX *dat, unsigned char *out, size_t *outl, + const unsigned char *in, size_t len); + int (*initiv)(PROV_CIPHER_CTX *ctx); + int (*tls_init)(PROV_CIPHER_CTX *ctx, unsigned char *aad, size_t alen); + int (*tls_iv_set_fixed)(PROV_CIPHER_CTX *ctx, unsigned char *fixed, + size_t flen); +} PROV_CIPHER_HW_CHACHA20_POLY1305; + +const PROV_CIPHER_HW *PROV_CIPHER_HW_chacha20_poly1305(size_t keybits); |