Shuffle headers
Make whitespace, sections and layouts consistent. Increase entropy.
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28
internal.h
28
internal.h
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@ -24,14 +24,16 @@
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* CONSTANTS
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*/
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/* Authentitcation. */
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/* Authentitcation */
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#define HMAC_BLOCKLEN_MAX LC_SHA512_BLOCKLEN
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#define HMAC_HASHLEN_MAX LC_SHA512_HASHLEN
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#define POLY1305_TAGLEN_WORDS (LC_POLY1305_TAGLEN / sizeof(uint32_t))
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/* Ciphers. */
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/* Ciphers */
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#define CHACHA20_BLOCKLEN_WORDS (LC_CHACHA20_BLOCKLEN / sizeof(uint32_t))
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#define CHACHA20_CTRMAX 4294967295 /* 2^32 - 1 */
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@ -39,7 +41,8 @@
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#define CHACHA20_NONCE_WORDS 4
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#define CHACHA20_ROUNDS 10
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/* Hashes. */
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/* Hashes */
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#define SHA256_BLOCKLEN_WORDS (LC_SHA256_BLOCKLEN / sizeof(uint32_t))
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#define SHA256_ROUNDS 64
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@ -152,11 +155,13 @@ struct lc_hash_ctx {
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void *arg;
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};
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/*
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* *_state holds the internal state of the cryptographic algorithms.
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*/
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/* AEAD. */
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/* AEAD */
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struct chacha20_poly1305_state {
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struct lc_auth_ctx *auth;
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@ -166,7 +171,8 @@ struct chacha20_poly1305_state {
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int aaddone;
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};
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/* Authentication. */
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/* Authentication */
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struct hmac_state {
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struct lc_hash_ctx *hash;
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@ -183,7 +189,7 @@ struct poly1305_state {
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};
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/* Ciphers. */
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/* Ciphers */
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struct chacha20_state {
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uint32_t s[CHACHA20_BLOCKLEN_WORDS];
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@ -194,7 +200,7 @@ struct chacha20_state {
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};
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/* Hashes. */
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/* Hashes */
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struct sha256_state {
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uint32_t h0, h1, h2, h3, h4, h5, h6, h7;
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@ -211,25 +217,25 @@ struct sha512_state {
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};
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/*
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* PROTOTYPES
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*/
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/* Authentitcation. */
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/* Authentitcation */
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void poly1305_block(struct poly1305_state *, uint32_t);
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void poly1305_reduce(struct poly1305_state *,
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uint32_t [POLY1305_TAGLEN_WORDS]);
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/* Ciphers. */
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/* Ciphers */
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void chacha20_block(struct chacha20_state *);
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void hchacha20_block(struct chacha20_state *);
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/* Hashes. */
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/* Hashes */
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void sha256_block(struct sha256_state *);
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136
lilcrypto.h
136
lilcrypto.h
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@ -23,10 +23,29 @@
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/*
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* Constants.
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* CONSTANTS
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*/
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/* Hashes. */
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/* Authentitcation */
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#define LC_POLY1305_BLOCKLEN 16
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#define LC_POLY1305_KEYLEN 32
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#define LC_POLY1305_TAGLEN 16
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/* Ciphers */
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#define LC_CHACHA20_BLOCKLEN 64
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#define LC_CHACHA20_KEYLEN 32
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#define LC_CHACHA20_NONCELEN 12
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#define LC_XCHACHA20_BLOCKLEN 64
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#define LC_XCHACHA20_KEYLEN 32
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#define LC_XCHACHA20_NONCELEN 24
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/* Hashes */
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#define LC_SHA224_BLOCKLEN 64
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#define LC_SHA224_HASHLEN 28
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#define LC_SHA256_BLOCKLEN 64
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@ -40,24 +59,12 @@
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#define LC_SHA512_256_BLOCKLEN 128
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#define LC_SHA512_256_HASHLEN 32
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/* Authentitcation. */
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#define LC_POLY1305_BLOCKLEN 16
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#define LC_POLY1305_KEYLEN 32
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#define LC_POLY1305_TAGLEN 16
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/* Ciphers. */
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#define LC_CHACHA20_BLOCKLEN 64
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#define LC_CHACHA20_KEYLEN 32
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#define LC_CHACHA20_NONCELEN 12
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#define LC_XCHACHA20_BLOCKLEN 64
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#define LC_XCHACHA20_KEYLEN 32
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#define LC_XCHACHA20_NONCELEN 24
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/*
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* Structs.
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* STRUCTS
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*/
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struct lc_aead_ctx;
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struct lc_aead_impl;
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@ -72,37 +79,8 @@ struct lc_hash_impl;
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struct lc_kdf_impl;
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/*
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* Parameters.
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*/
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/* Authentication. */
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struct lc_hmac_params {
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struct lc_hash_ctx *hash;
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size_t keylen;
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uint8_t *key;
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};
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struct lc_poly1305_params {
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uint8_t key[LC_POLY1305_KEYLEN];
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};
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/* Ciphers. */
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struct lc_chacha20_params {
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uint8_t key[LC_CHACHA20_KEYLEN];
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uint8_t nonce[LC_CHACHA20_NONCELEN];
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uint32_t counter;
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};
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struct lc_xchacha20_params {
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uint8_t key[LC_XCHACHA20_KEYLEN];
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uint8_t nonce[LC_XCHACHA20_NONCELEN];
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uint32_t counter;
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};
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/* AEAD. */
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/* AEAD parameters */
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struct lc_chacha20_poly1305_params {
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struct lc_auth_ctx *auth;
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@ -118,7 +96,36 @@ struct lc_xchacha20_poly1305_params {
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uint8_t nonce[LC_XCHACHA20_NONCELEN];
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};
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/* KDF. */
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/* Authentication parameters */
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struct lc_hmac_params {
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struct lc_hash_ctx *hash;
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size_t keylen;
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uint8_t *key;
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};
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struct lc_poly1305_params {
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uint8_t key[LC_POLY1305_KEYLEN];
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};
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/* Ciphers parameters */
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struct lc_chacha20_params {
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uint8_t key[LC_CHACHA20_KEYLEN];
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uint8_t nonce[LC_CHACHA20_NONCELEN];
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uint32_t counter;
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};
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struct lc_xchacha20_params {
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uint8_t key[LC_XCHACHA20_KEYLEN];
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uint8_t nonce[LC_XCHACHA20_NONCELEN];
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uint32_t counter;
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};
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/* KDF parameters */
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struct lc_hkdf_params {
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struct lc_hash_ctx *hash;
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@ -133,16 +140,17 @@ struct lc_hkdf_params {
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/*
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* Constant-time operations.
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* PROTOTYPES
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*/
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/* Constant-time operations */
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uint32_t lc_ct_cmp(const uint8_t *, const uint8_t *, size_t);
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uint32_t lc_ct_mask32(uint32_t);
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/*
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* Hashes.
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*/
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/* Hashes */
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int lc_hash_init(struct lc_hash_ctx *);
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int lc_hash_update(struct lc_hash_ctx *, const uint8_t *, size_t);
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@ -161,9 +169,7 @@ const struct lc_hash_impl *lc_hash_impl_sha512_224(void);
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const struct lc_hash_impl *lc_hash_impl_sha512_256(void);
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/*
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* Authentication.
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*/
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/* Authentication */
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int lc_auth_init(struct lc_auth_ctx *, void *);
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int lc_auth_update(struct lc_auth_ctx *, const uint8_t *, size_t);
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@ -178,9 +184,7 @@ const struct lc_auth_impl *lc_auth_impl_hmac(void);
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const struct lc_auth_impl *lc_auth_impl_poly1305(void);
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/*
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* Ciphers.
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*/
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/* Ciphers */
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int lc_cipher_encrypt_init(struct lc_cipher_ctx *, void *);
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int lc_cipher_encrypt_update(struct lc_cipher_ctx *, uint8_t *, size_t *,
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@ -202,16 +206,13 @@ const struct lc_cipher_impl *lc_cipher_impl_chacha20(void);
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const struct lc_cipher_impl *lc_cipher_impl_xchacha20(void);
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/*
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* Authenticated encryption with additional data.
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*/
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/* Authenticated encryption with additional data */
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int lc_aead_seal_init(struct lc_aead_ctx *, void *);
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int lc_aead_seal_update(struct lc_aead_ctx *, uint8_t *, size_t *,
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const uint8_t *, size_t, const uint8_t *, size_t);
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int lc_aead_seal_final(struct lc_aead_ctx *, uint8_t *, size_t *, uint8_t *,
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size_t *);
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int lc_aead_seal_final(struct lc_aead_ctx *, uint8_t *, size_t *,
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uint8_t *, size_t *);
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int lc_aead_seal(const struct lc_aead_impl *, uint8_t *, size_t *,
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uint8_t *, size_t *, void *, const uint8_t *, size_t,
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const uint8_t *, size_t);
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@ -231,9 +232,7 @@ const struct lc_aead_impl *lc_aead_impl_chacha20_poly1305(void);
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const struct lc_aead_impl *lc_aead_impl_xchacha20_poly1305(void);
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/*
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* Key derivation functions.
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*/
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/* Key derivation functions */
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int lc_kdf(const struct lc_kdf_impl *, uint8_t *, size_t *, void *,
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size_t);
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@ -241,11 +240,10 @@ int lc_kdf(const struct lc_kdf_impl *, uint8_t *, size_t *, void *,
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const struct lc_kdf_impl *lc_kdf_impl_hkdf(void);
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/*
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* Utilities.
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*/
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/* Utilities */
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int lc_hexdump_fp(FILE *, const void *, size_t);
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void lc_scrub(void *, size_t);
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#endif /* LILCRYPTO_H */
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