diff --git a/library/chacha20.c b/library/chacha20.c index 7f7603549..81bb3b702 100644 --- a/library/chacha20.c +++ b/library/chacha20.c @@ -76,11 +76,11 @@ * \param c The index of 'c' in the state. * \param d The index of 'd' in the state. */ -static inline void mbedtls_chacha20_quarter_round( uint32_t state[16], - size_t a, - size_t b, - size_t c, - size_t d ) +static inline void chacha20_quarter_round( uint32_t state[16], + size_t a, + size_t b, + size_t c, + size_t d ) { /* a += b; d ^= a; d <<<= 16; */ state[a] += state[b]; @@ -111,17 +111,17 @@ static inline void mbedtls_chacha20_quarter_round( uint32_t state[16], * * \param state The ChaCha20 state to update. */ -static void mbedtls_chacha20_inner_block( uint32_t state[16] ) +static void chacha20_inner_block( uint32_t state[16] ) { - mbedtls_chacha20_quarter_round( state, 0, 4, 8, 12 ); - mbedtls_chacha20_quarter_round( state, 1, 5, 9, 13 ); - mbedtls_chacha20_quarter_round( state, 2, 6, 10, 14 ); - mbedtls_chacha20_quarter_round( state, 3, 7, 11, 15 ); + chacha20_quarter_round( state, 0, 4, 8, 12 ); + chacha20_quarter_round( state, 1, 5, 9, 13 ); + chacha20_quarter_round( state, 2, 6, 10, 14 ); + chacha20_quarter_round( state, 3, 7, 11, 15 ); - mbedtls_chacha20_quarter_round( state, 0, 5, 10, 15 ); - mbedtls_chacha20_quarter_round( state, 1, 6, 11, 12 ); - mbedtls_chacha20_quarter_round( state, 2, 7, 8, 13 ); - mbedtls_chacha20_quarter_round( state, 3, 4, 9, 14 ); + chacha20_quarter_round( state, 0, 5, 10, 15 ); + chacha20_quarter_round( state, 1, 6, 11, 12 ); + chacha20_quarter_round( state, 2, 7, 8, 13 ); + chacha20_quarter_round( state, 3, 4, 9, 14 ); } /** @@ -131,9 +131,9 @@ static void mbedtls_chacha20_inner_block( uint32_t state[16] ) * \param working_state This state is used as a temporary working area. * \param keystream Generated keystream bytes are written to this buffer. */ -static void mbedtls_chacha20_block( const uint32_t initial_state[16], - uint32_t working_state[16], - unsigned char keystream[64] ) +static void chacha20_block( const uint32_t initial_state[16], + uint32_t working_state[16], + unsigned char keystream[64] ) { size_t i; size_t offset; @@ -143,9 +143,7 @@ static void mbedtls_chacha20_block( const uint32_t initial_state[16], CHACHA20_BLOCK_SIZE_BYTES ); for ( i = 0U; i < 10U; i++ ) - { - mbedtls_chacha20_inner_block( working_state ); - } + chacha20_inner_block( working_state ); working_state[0] += initial_state[0]; working_state[1] += initial_state[1]; @@ -281,7 +279,7 @@ int mbedtls_chacha20_update( mbedtls_chacha20_context *ctx, while ( size >= CHACHA20_BLOCK_SIZE_BYTES ) { /* Generate new keystream block and increment counter */ - mbedtls_chacha20_block( ctx->initial_state, ctx->working_state, ctx->keystream8 ); + chacha20_block( ctx->initial_state, ctx->working_state, ctx->keystream8 ); ctx->initial_state[CHACHA20_CTR_INDEX]++; for ( i = 0U; i < 64U; i += 8U ) @@ -304,7 +302,7 @@ int mbedtls_chacha20_update( mbedtls_chacha20_context *ctx, if ( size > 0U ) { /* Generate new keystream block and increment counter */ - mbedtls_chacha20_block( ctx->initial_state, ctx->working_state, ctx->keystream8 ); + chacha20_block( ctx->initial_state, ctx->working_state, ctx->keystream8 ); ctx->initial_state[CHACHA20_CTR_INDEX]++; for ( i = 0U; i < size; i++) diff --git a/library/chachapoly.c b/library/chachapoly.c index 5ce27f210..d0c35511a 100644 --- a/library/chachapoly.c +++ b/library/chachapoly.c @@ -54,7 +54,7 @@ * * \param ctx The ChaCha20-Poly1305 context. */ -static void mbedtls_chachapoly_pad_aad( mbedtls_chachapoly_context *ctx ) +static void chachapoly_pad_aad( mbedtls_chachapoly_context *ctx ) { uint32_t partial_block_len = (uint32_t) ( ctx->aad_len % 16U ); unsigned char zeroes[15]; @@ -73,7 +73,7 @@ static void mbedtls_chachapoly_pad_aad( mbedtls_chachapoly_context *ctx ) * * \param ctx The ChaCha20-Poly1305 context. */ -static void mbedtls_chachapoly_pad_ciphertext( mbedtls_chachapoly_context *ctx ) +static void chachapoly_pad_ciphertext( mbedtls_chachapoly_context *ctx ) { uint32_t partial_block_len = (uint32_t) ( ctx->ciphertext_len % 16U ); unsigned char zeroes[15]; @@ -218,7 +218,7 @@ int mbedtls_chachapoly_update( mbedtls_chachapoly_context *ctx, { ctx->state = CHACHAPOLY_STATE_CIPHERTEXT; - mbedtls_chachapoly_pad_aad( ctx ); + chachapoly_pad_aad( ctx ); } ctx->ciphertext_len += len; @@ -257,11 +257,11 @@ int mbedtls_chachapoly_finish( mbedtls_chachapoly_context *ctx, if ( ctx->state == CHACHAPOLY_STATE_AAD ) { - mbedtls_chachapoly_pad_aad( ctx ); + chachapoly_pad_aad( ctx ); } else if ( ctx->state == CHACHAPOLY_STATE_CIPHERTEXT ) { - mbedtls_chachapoly_pad_ciphertext( ctx ); + chachapoly_pad_ciphertext( ctx ); } ctx->state = CHACHAPOLY_STATE_FINISHED; diff --git a/library/poly1305.c b/library/poly1305.c index bdd674475..091684e19 100644 --- a/library/poly1305.c +++ b/library/poly1305.c @@ -64,10 +64,10 @@ * to the input data before calling this function. * Otherwise, set this parameter to 1. */ -static void mbedtls_poly1305_process( mbedtls_poly1305_context *ctx, - size_t nblocks, - const unsigned char *input, - uint32_t needs_padding ) +static void poly1305_process( mbedtls_poly1305_context *ctx, + size_t nblocks, + const unsigned char *input, + uint32_t needs_padding ) { uint64_t d0, d1, d2, d3; uint32_t acc0, acc1, acc2, acc3, acc4; @@ -167,8 +167,8 @@ static void mbedtls_poly1305_process( mbedtls_poly1305_context *ctx, * \param mac The buffer to where the MAC is written. Must be * big enough to contain the 16-byte MAC. */ -static void mbedtls_poly1305_compute_mac( const mbedtls_poly1305_context *ctx, - unsigned char mac[16] ) +static void poly1305_compute_mac( const mbedtls_poly1305_context *ctx, + unsigned char mac[16] ) { uint64_t d; uint32_t g0, g1, g2, g3, g4; @@ -330,10 +330,7 @@ int mbedtls_poly1305_update( mbedtls_poly1305_context *ctx, ctx->queue_len = 0U; - mbedtls_poly1305_process( ctx, - 1U, - ctx->queue, - 1U ); /* add padding bit */ + poly1305_process( ctx, 1U, ctx->queue, 1U ); /* add padding bit */ offset += queue_free_len; remaining -= queue_free_len; @@ -344,7 +341,7 @@ int mbedtls_poly1305_update( mbedtls_poly1305_context *ctx, { nblocks = remaining / POLY1305_BLOCK_SIZE_BYTES; - mbedtls_poly1305_process( ctx, nblocks, &input[offset], 1U ); + poly1305_process( ctx, nblocks, &input[offset], 1U ); offset += nblocks * POLY1305_BLOCK_SIZE_BYTES; remaining %= POLY1305_BLOCK_SIZE_BYTES; @@ -380,13 +377,11 @@ int mbedtls_poly1305_finish( mbedtls_poly1305_context *ctx, 0, POLY1305_BLOCK_SIZE_BYTES - ctx->queue_len ); - mbedtls_poly1305_process( ctx, - 1U, /* Process 1 block */ - ctx->queue, - 0U ); /* Don't add padding bit (it was just added above) */ + poly1305_process( ctx, 1U, /* Process 1 block */ + ctx->queue, 0U ); /* Don't add padding bit (it was just added above) */ } - mbedtls_poly1305_compute_mac( ctx, mac ); + poly1305_compute_mac( ctx, mac ); return( 0 ); }