diff --git a/library/cipher.c b/library/cipher.c
index 0d869cf..627d459 100644
--- a/library/cipher.c
+++ b/library/cipher.c
@@ -111,7 +111,7 @@
 
     for( def = mbedtls_cipher_definitions; def->info != NULL; def++ )
         if( def->info->base->cipher == cipher_id &&
-            def->info->key_length == (unsigned) key_bitlen &&
+            def->info->key_bitlen == (unsigned) key_bitlen &&
             def->info->mode == mode )
             return( def->info );
 
@@ -167,12 +167,12 @@
         return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
 
     if( ( ctx->cipher_info->flags & MBEDTLS_CIPHER_VARIABLE_KEY_LEN ) == 0 &&
-        (int) ctx->cipher_info->key_length != key_bitlen )
+        (int) ctx->cipher_info->key_bitlen != key_bitlen )
     {
         return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
     }
 
-    ctx->key_length = key_bitlen;
+    ctx->key_bitlen = key_bitlen;
     ctx->operation = operation;
 
     /*
@@ -183,12 +183,12 @@
         MBEDTLS_MODE_CTR == ctx->cipher_info->mode )
     {
         return ctx->cipher_info->base->setkey_enc_func( ctx->cipher_ctx, key,
-                ctx->key_length );
+                ctx->key_bitlen );
     }
 
     if( MBEDTLS_DECRYPT == operation )
         return ctx->cipher_info->base->setkey_dec_func( ctx->cipher_ctx, key,
-                ctx->key_length );
+                ctx->key_bitlen );
 
     return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
 }
diff --git a/library/cipher_wrap.c b/library/cipher_wrap.c
index 18f832e..fafcfa0 100644
--- a/library/cipher_wrap.c
+++ b/library/cipher_wrap.c
@@ -140,15 +140,15 @@
 #endif /* MBEDTLS_CIPHER_MODE_CTR */
 
 static int aes_setkey_dec_wrap( void *ctx, const unsigned char *key,
-                                unsigned int key_length )
+                                unsigned int key_bitlen )
 {
-    return mbedtls_aes_setkey_dec( (mbedtls_aes_context *) ctx, key, key_length );
+    return mbedtls_aes_setkey_dec( (mbedtls_aes_context *) ctx, key, key_bitlen );
 }
 
 static int aes_setkey_enc_wrap( void *ctx, const unsigned char *key,
-                                unsigned int key_length )
+                                unsigned int key_bitlen )
 {
-    return mbedtls_aes_setkey_enc( (mbedtls_aes_context *) ctx, key, key_length );
+    return mbedtls_aes_setkey_enc( (mbedtls_aes_context *) ctx, key, key_bitlen );
 }
 
 static void * aes_ctx_alloc( void )
@@ -330,10 +330,10 @@
 
 #if defined(MBEDTLS_GCM_C)
 static int gcm_aes_setkey_wrap( void *ctx, const unsigned char *key,
-                                unsigned int key_length )
+                                unsigned int key_bitlen )
 {
     return mbedtls_gcm_setkey( (mbedtls_gcm_context *) ctx, MBEDTLS_CIPHER_ID_AES,
-                     key, key_length );
+                     key, key_bitlen );
 }
 
 static const mbedtls_cipher_base_t gcm_aes_info = {
@@ -393,10 +393,10 @@
 
 #if defined(MBEDTLS_CCM_C)
 static int ccm_aes_setkey_wrap( void *ctx, const unsigned char *key,
-                                unsigned int key_length )
+                                unsigned int key_bitlen )
 {
     return mbedtls_ccm_setkey( (mbedtls_ccm_context *) ctx, MBEDTLS_CIPHER_ID_AES,
-                     key, key_length );
+                     key, key_bitlen );
 }
 
 static const mbedtls_cipher_base_t ccm_aes_info = {
@@ -496,15 +496,15 @@
 #endif /* MBEDTLS_CIPHER_MODE_CTR */
 
 static int camellia_setkey_dec_wrap( void *ctx, const unsigned char *key,
-                                     unsigned int key_length )
+                                     unsigned int key_bitlen )
 {
-    return mbedtls_camellia_setkey_dec( (mbedtls_camellia_context *) ctx, key, key_length );
+    return mbedtls_camellia_setkey_dec( (mbedtls_camellia_context *) ctx, key, key_bitlen );
 }
 
 static int camellia_setkey_enc_wrap( void *ctx, const unsigned char *key,
-                                     unsigned int key_length )
+                                     unsigned int key_bitlen )
 {
-    return mbedtls_camellia_setkey_enc( (mbedtls_camellia_context *) ctx, key, key_length );
+    return mbedtls_camellia_setkey_enc( (mbedtls_camellia_context *) ctx, key, key_bitlen );
 }
 
 static void * camellia_ctx_alloc( void )
@@ -687,10 +687,10 @@
 
 #if defined(MBEDTLS_GCM_C)
 static int gcm_camellia_setkey_wrap( void *ctx, const unsigned char *key,
-                                     unsigned int key_length )
+                                     unsigned int key_bitlen )
 {
     return mbedtls_gcm_setkey( (mbedtls_gcm_context *) ctx, MBEDTLS_CIPHER_ID_CAMELLIA,
-                     key, key_length );
+                     key, key_bitlen );
 }
 
 static const mbedtls_cipher_base_t gcm_camellia_info = {
@@ -750,10 +750,10 @@
 
 #if defined(MBEDTLS_CCM_C)
 static int ccm_camellia_setkey_wrap( void *ctx, const unsigned char *key,
-                                     unsigned int key_length )
+                                     unsigned int key_bitlen )
 {
     return mbedtls_ccm_setkey( (mbedtls_ccm_context *) ctx, MBEDTLS_CIPHER_ID_CAMELLIA,
-                     key, key_length );
+                     key, key_bitlen );
 }
 
 static const mbedtls_cipher_base_t ccm_camellia_info = {
@@ -848,49 +848,49 @@
 #endif /* MBEDTLS_CIPHER_MODE_CBC */
 
 static int des_setkey_dec_wrap( void *ctx, const unsigned char *key,
-                                unsigned int key_length )
+                                unsigned int key_bitlen )
 {
-    ((void) key_length);
+    ((void) key_bitlen);
 
     return mbedtls_des_setkey_dec( (mbedtls_des_context *) ctx, key );
 }
 
 static int des_setkey_enc_wrap( void *ctx, const unsigned char *key,
-                                unsigned int key_length )
+                                unsigned int key_bitlen )
 {
-    ((void) key_length);
+    ((void) key_bitlen);
 
     return mbedtls_des_setkey_enc( (mbedtls_des_context *) ctx, key );
 }
 
 static int des3_set2key_dec_wrap( void *ctx, const unsigned char *key,
-                                  unsigned int key_length )
+                                  unsigned int key_bitlen )
 {
-    ((void) key_length);
+    ((void) key_bitlen);
 
     return mbedtls_des3_set2key_dec( (mbedtls_des3_context *) ctx, key );
 }
 
 static int des3_set2key_enc_wrap( void *ctx, const unsigned char *key,
-                                  unsigned int key_length )
+                                  unsigned int key_bitlen )
 {
-    ((void) key_length);
+    ((void) key_bitlen);
 
     return mbedtls_des3_set2key_enc( (mbedtls_des3_context *) ctx, key );
 }
 
 static int des3_set3key_dec_wrap( void *ctx, const unsigned char *key,
-                                  unsigned int key_length )
+                                  unsigned int key_bitlen )
 {
-    ((void) key_length);
+    ((void) key_bitlen);
 
     return mbedtls_des3_set3key_dec( (mbedtls_des3_context *) ctx, key );
 }
 
 static int des3_set3key_enc_wrap( void *ctx, const unsigned char *key,
-                                  unsigned int key_length )
+                                  unsigned int key_bitlen )
 {
-    ((void) key_length);
+    ((void) key_bitlen);
 
     return mbedtls_des3_set3key_enc( (mbedtls_des3_context *) ctx, key );
 }
@@ -1107,9 +1107,9 @@
 #endif /* MBEDTLS_CIPHER_MODE_CTR */
 
 static int blowfish_setkey_wrap( void *ctx, const unsigned char *key,
-                                 unsigned int key_length )
+                                 unsigned int key_bitlen )
 {
-    return mbedtls_blowfish_setkey( (mbedtls_blowfish_context *) ctx, key, key_length );
+    return mbedtls_blowfish_setkey( (mbedtls_blowfish_context *) ctx, key, key_bitlen );
 }
 
 static void * blowfish_ctx_alloc( void )
@@ -1212,13 +1212,13 @@
 }
 
 static int arc4_setkey_wrap( void *ctx, const unsigned char *key,
-                             unsigned int key_length )
+                             unsigned int key_bitlen )
 {
-    /* we get key_length in bits, arc4 expects it in bytes */
-    if( key_length % 8 != 0 )
+    /* we get key_bitlen in bits, arc4 expects it in bytes */
+    if( key_bitlen % 8 != 0 )
         return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
 
-    mbedtls_arc4_setup( (mbedtls_arc4_context *) ctx, key, key_length / 8 );
+    mbedtls_arc4_setup( (mbedtls_arc4_context *) ctx, key, key_bitlen / 8 );
     return( 0 );
 }
 
@@ -1285,11 +1285,11 @@
 }
 
 static int null_setkey( void *ctx, const unsigned char *key,
-                        unsigned int key_length )
+                        unsigned int key_bitlen )
 {
     ((void) ctx);
     ((void) key);
-    ((void) key_length);
+    ((void) key_bitlen);
 
     return( 0 );
 }
diff --git a/library/pkcs12.c b/library/pkcs12.c
index 1baa95c..bdf6a9b 100644
--- a/library/pkcs12.c
+++ b/library/pkcs12.c
@@ -184,7 +184,7 @@
     if( cipher_info == NULL )
         return( MBEDTLS_ERR_PKCS12_FEATURE_UNAVAILABLE );
 
-    keylen = cipher_info->key_length / 8;
+    keylen = cipher_info->key_bitlen / 8;
 
     if( ( ret = pkcs12_pbe_derive_key_iv( pbe_params, md_type, pwd, pwdlen,
                                           key, keylen,
diff --git a/library/pkcs5.c b/library/pkcs5.c
index 7564733..68cbfa7 100644
--- a/library/pkcs5.c
+++ b/library/pkcs5.c
@@ -176,7 +176,7 @@
      * The value of keylen from pkcs5_parse_pbkdf2_params() is ignored
      * since it is optional and we don't know if it was set or not
      */
-    keylen = cipher_info->key_length / 8;
+    keylen = cipher_info->key_bitlen / 8;
 
     if( enc_scheme_params.tag != MBEDTLS_ASN1_OCTET_STRING ||
         enc_scheme_params.len != cipher_info->iv_size )
diff --git a/library/ssl_ticket.c b/library/ssl_ticket.c
index baa8b82..3c7dd27 100644
--- a/library/ssl_ticket.c
+++ b/library/ssl_ticket.c
@@ -143,7 +143,7 @@
         return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
     }
 
-    if( cipher_info->key_length > 8 * MAX_KEY_BYTES )
+    if( cipher_info->key_bitlen > 8 * MAX_KEY_BYTES )
         return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
 
     if( ( ret = mbedtls_cipher_setup( &ctx->keys[0].ctx, cipher_info ) ) != 0 ||
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 48dfd04..f14c9dd 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -677,7 +677,7 @@
      * Determine the appropriate key, IV and MAC length.
      */
 
-    transform->keylen = cipher_info->key_length / 8;
+    transform->keylen = cipher_info->key_bitlen / 8;
 
     if( cipher_info->mode == MBEDTLS_MODE_GCM ||
         cipher_info->mode == MBEDTLS_MODE_CCM )
@@ -880,7 +880,7 @@
     }
 
     if( ( ret = mbedtls_cipher_setkey( &transform->cipher_ctx_enc, key1,
-                               cipher_info->key_length,
+                               cipher_info->key_bitlen,
                                MBEDTLS_ENCRYPT ) ) != 0 )
     {
         MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_setkey", ret );
@@ -888,7 +888,7 @@
     }
 
     if( ( ret = mbedtls_cipher_setkey( &transform->cipher_ctx_dec, key2,
-                               cipher_info->key_length,
+                               cipher_info->key_bitlen,
                                MBEDTLS_DECRYPT ) ) != 0 )
     {
         MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_setkey", ret );