Rm mbedtls_ prefix form static functions

- prefix is no necessary for static ids and makes lines longer
- most often omitted (even though we're not fully consistent)
diff --git a/library/chacha20.c b/library/chacha20.c
index 7f76035..81bb3b7 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 @@
  *
  * \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 @@
  * \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 @@
             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 @@
     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 @@
     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 5ce27f2..d0c3551 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 @@
  *
  * \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 @@
     {
         ctx->state = CHACHAPOLY_STATE_CIPHERTEXT;
 
-        mbedtls_chachapoly_pad_aad( ctx );
+        chachapoly_pad_aad( ctx );
     }
 
     ctx->ciphertext_len += len;
@@ -257,11 +257,11 @@
 
     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 bdd6744..091684e 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 @@
  * \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 @@
 
             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 @@
     {
         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 @@
                 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 );
 }