diff --git a/library/pkwrite.c b/library/pkwrite.c
index 2c08b92..6c982ee 100644
--- a/library/pkwrite.c
+++ b/library/pkwrite.c
@@ -20,13 +20,13 @@
  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#if !defined(POLARSSL_CONFIG_FILE)
+#if !defined(MBEDTLS_CONFIG_FILE)
 #include "mbedtls/config.h"
 #else
-#include POLARSSL_CONFIG_FILE
+#include MBEDTLS_CONFIG_FILE
 #endif
 
-#if defined(POLARSSL_PK_WRITE_C)
+#if defined(MBEDTLS_PK_WRITE_C)
 
 #include "mbedtls/pk.h"
 #include "mbedtls/asn1write.h"
@@ -34,28 +34,28 @@
 
 #include <string.h>
 
-#if defined(POLARSSL_RSA_C)
+#if defined(MBEDTLS_RSA_C)
 #include "mbedtls/rsa.h"
 #endif
-#if defined(POLARSSL_ECP_C)
+#if defined(MBEDTLS_ECP_C)
 #include "mbedtls/ecp.h"
 #endif
-#if defined(POLARSSL_ECDSA_C)
+#if defined(MBEDTLS_ECDSA_C)
 #include "mbedtls/ecdsa.h"
 #endif
-#if defined(POLARSSL_PEM_WRITE_C)
+#if defined(MBEDTLS_PEM_WRITE_C)
 #include "mbedtls/pem.h"
 #endif
 
-#if defined(POLARSSL_PLATFORM_C)
+#if defined(MBEDTLS_PLATFORM_C)
 #include "mbedtls/platform.h"
 #else
 #include <stdlib.h>
-#define polarssl_malloc     malloc
-#define polarssl_free       free
+#define mbedtls_malloc     malloc
+#define mbedtls_free       free
 #endif
 
-#if defined(POLARSSL_RSA_C)
+#if defined(MBEDTLS_RSA_C)
 /*
  *  RSAPublicKey ::= SEQUENCE {
  *      modulus           INTEGER,  -- n
@@ -63,42 +63,42 @@
  *  }
  */
 static int pk_write_rsa_pubkey( unsigned char **p, unsigned char *start,
-                                  rsa_context *rsa )
+                                  mbedtls_rsa_context *rsa )
 {
     int ret;
     size_t len = 0;
 
-    ASN1_CHK_ADD( len, asn1_write_mpi( p, start, &rsa->E ) );
-    ASN1_CHK_ADD( len, asn1_write_mpi( p, start, &rsa->N ) );
+    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( p, start, &rsa->E ) );
+    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( p, start, &rsa->N ) );
 
-    ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) );
-    ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_CONSTRUCTED |
-                                                 ASN1_SEQUENCE ) );
+    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) );
+    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_CONSTRUCTED |
+                                                 MBEDTLS_ASN1_SEQUENCE ) );
 
     return( (int) len );
 }
-#endif /* POLARSSL_RSA_C */
+#endif /* MBEDTLS_RSA_C */
 
-#if defined(POLARSSL_ECP_C)
+#if defined(MBEDTLS_ECP_C)
 /*
  * EC public key is an EC point
  */
 static int pk_write_ec_pubkey( unsigned char **p, unsigned char *start,
-                                 ecp_keypair *ec )
+                                 mbedtls_ecp_keypair *ec )
 {
     int ret;
     size_t len = 0;
-    unsigned char buf[POLARSSL_ECP_MAX_PT_LEN];
+    unsigned char buf[MBEDTLS_ECP_MAX_PT_LEN];
 
-    if( ( ret = ecp_point_write_binary( &ec->grp, &ec->Q,
-                                        POLARSSL_ECP_PF_UNCOMPRESSED,
+    if( ( ret = mbedtls_ecp_point_write_binary( &ec->grp, &ec->Q,
+                                        MBEDTLS_ECP_PF_UNCOMPRESSED,
                                         &len, buf, sizeof( buf ) ) ) != 0 )
     {
         return( ret );
     }
 
     if( *p - start < (int) len )
-        return( POLARSSL_ERR_ASN1_BUF_TOO_SMALL );
+        return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );
 
     *p -= len;
     memcpy( *p, buf, len );
@@ -112,44 +112,44 @@
  * }
  */
 static int pk_write_ec_param( unsigned char **p, unsigned char *start,
-                                ecp_keypair *ec )
+                                mbedtls_ecp_keypair *ec )
 {
     int ret;
     size_t len = 0;
     const char *oid;
     size_t oid_len;
 
-    if( ( ret = oid_get_oid_by_ec_grp( ec->grp.id, &oid, &oid_len ) ) != 0 )
+    if( ( ret = mbedtls_oid_get_oid_by_ec_grp( ec->grp.id, &oid, &oid_len ) ) != 0 )
         return( ret );
 
-    ASN1_CHK_ADD( len, asn1_write_oid( p, start, oid, oid_len ) );
+    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_oid( p, start, oid, oid_len ) );
 
     return( (int) len );
 }
-#endif /* POLARSSL_ECP_C */
+#endif /* MBEDTLS_ECP_C */
 
-int pk_write_pubkey( unsigned char **p, unsigned char *start,
-                     const pk_context *key )
+int mbedtls_pk_write_pubkey( unsigned char **p, unsigned char *start,
+                     const mbedtls_pk_context *key )
 {
     int ret;
     size_t len = 0;
 
-#if defined(POLARSSL_RSA_C)
-    if( pk_get_type( key ) == POLARSSL_PK_RSA )
-        ASN1_CHK_ADD( len, pk_write_rsa_pubkey( p, start, pk_rsa( *key ) ) );
+#if defined(MBEDTLS_RSA_C)
+    if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_RSA )
+        MBEDTLS_ASN1_CHK_ADD( len, pk_write_rsa_pubkey( p, start, mbedtls_pk_rsa( *key ) ) );
     else
 #endif
-#if defined(POLARSSL_ECP_C)
-    if( pk_get_type( key ) == POLARSSL_PK_ECKEY )
-        ASN1_CHK_ADD( len, pk_write_ec_pubkey( p, start, pk_ec( *key ) ) );
+#if defined(MBEDTLS_ECP_C)
+    if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_ECKEY )
+        MBEDTLS_ASN1_CHK_ADD( len, pk_write_ec_pubkey( p, start, mbedtls_pk_ec( *key ) ) );
     else
 #endif
-        return( POLARSSL_ERR_PK_FEATURE_UNAVAILABLE );
+        return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
 
     return( (int) len );
 }
 
-int pk_write_pubkey_der( pk_context *key, unsigned char *buf, size_t size )
+int mbedtls_pk_write_pubkey_der( mbedtls_pk_context *key, unsigned char *buf, size_t size )
 {
     int ret;
     unsigned char *c;
@@ -158,10 +158,10 @@
 
     c = buf + size;
 
-    ASN1_CHK_ADD( len, pk_write_pubkey( &c, buf, key ) );
+    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_pk_write_pubkey( &c, buf, key ) );
 
     if( c - buf < 1 )
-        return( POLARSSL_ERR_ASN1_BUF_TOO_SMALL );
+        return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );
 
     /*
      *  SubjectPublicKeyInfo  ::=  SEQUENCE  {
@@ -171,63 +171,63 @@
     *--c = 0;
     len += 1;
 
-    ASN1_CHK_ADD( len, asn1_write_len( &c, buf, len ) );
-    ASN1_CHK_ADD( len, asn1_write_tag( &c, buf, ASN1_BIT_STRING ) );
+    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) );
+    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_BIT_STRING ) );
 
-    if( ( ret = oid_get_oid_by_pk_alg( pk_get_type( key ),
+    if( ( ret = mbedtls_oid_get_oid_by_pk_alg( mbedtls_pk_get_type( key ),
                                        &oid, &oid_len ) ) != 0 )
     {
         return( ret );
     }
 
-#if defined(POLARSSL_ECP_C)
-    if( pk_get_type( key ) == POLARSSL_PK_ECKEY )
+#if defined(MBEDTLS_ECP_C)
+    if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_ECKEY )
     {
-        ASN1_CHK_ADD( par_len, pk_write_ec_param( &c, buf, pk_ec( *key ) ) );
+        MBEDTLS_ASN1_CHK_ADD( par_len, pk_write_ec_param( &c, buf, mbedtls_pk_ec( *key ) ) );
     }
 #endif
 
-    ASN1_CHK_ADD( len, asn1_write_algorithm_identifier( &c, buf, oid, oid_len,
+    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_algorithm_identifier( &c, buf, oid, oid_len,
                                                         par_len ) );
 
-    ASN1_CHK_ADD( len, asn1_write_len( &c, buf, len ) );
-    ASN1_CHK_ADD( len, asn1_write_tag( &c, buf, ASN1_CONSTRUCTED |
-                                                ASN1_SEQUENCE ) );
+    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) );
+    MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONSTRUCTED |
+                                                MBEDTLS_ASN1_SEQUENCE ) );
 
     return( (int) len );
 }
 
-int pk_write_key_der( pk_context *key, unsigned char *buf, size_t size )
+int mbedtls_pk_write_key_der( mbedtls_pk_context *key, unsigned char *buf, size_t size )
 {
     int ret;
     unsigned char *c = buf + size;
     size_t len = 0;
 
-#if defined(POLARSSL_RSA_C)
-    if( pk_get_type( key ) == POLARSSL_PK_RSA )
+#if defined(MBEDTLS_RSA_C)
+    if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_RSA )
     {
-        rsa_context *rsa = pk_rsa( *key );
+        mbedtls_rsa_context *rsa = mbedtls_pk_rsa( *key );
 
-        ASN1_CHK_ADD( len, asn1_write_mpi( &c, buf, &rsa->QP ) );
-        ASN1_CHK_ADD( len, asn1_write_mpi( &c, buf, &rsa->DQ ) );
-        ASN1_CHK_ADD( len, asn1_write_mpi( &c, buf, &rsa->DP ) );
-        ASN1_CHK_ADD( len, asn1_write_mpi( &c, buf, &rsa->Q ) );
-        ASN1_CHK_ADD( len, asn1_write_mpi( &c, buf, &rsa->P ) );
-        ASN1_CHK_ADD( len, asn1_write_mpi( &c, buf, &rsa->D ) );
-        ASN1_CHK_ADD( len, asn1_write_mpi( &c, buf, &rsa->E ) );
-        ASN1_CHK_ADD( len, asn1_write_mpi( &c, buf, &rsa->N ) );
-        ASN1_CHK_ADD( len, asn1_write_int( &c, buf, 0 ) );
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->QP ) );
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->DQ ) );
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->DP ) );
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->Q ) );
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->P ) );
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->D ) );
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->E ) );
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->N ) );
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_int( &c, buf, 0 ) );
 
-        ASN1_CHK_ADD( len, asn1_write_len( &c, buf, len ) );
-        ASN1_CHK_ADD( len, asn1_write_tag( &c, buf, ASN1_CONSTRUCTED |
-                                                    ASN1_SEQUENCE ) );
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) );
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONSTRUCTED |
+                                                    MBEDTLS_ASN1_SEQUENCE ) );
     }
     else
-#endif /* POLARSSL_RSA_C */
-#if defined(POLARSSL_ECP_C)
-    if( pk_get_type( key ) == POLARSSL_PK_ECKEY )
+#endif /* MBEDTLS_RSA_C */
+#if defined(MBEDTLS_ECP_C)
+    if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_ECKEY )
     {
-        ecp_keypair *ec = pk_ec( *key );
+        mbedtls_ecp_keypair *ec = mbedtls_pk_ec( *key );
         size_t pub_len = 0, par_len = 0;
 
         /*
@@ -242,48 +242,48 @@
          */
 
         /* publicKey */
-        ASN1_CHK_ADD( pub_len, pk_write_ec_pubkey( &c, buf, ec ) );
+        MBEDTLS_ASN1_CHK_ADD( pub_len, pk_write_ec_pubkey( &c, buf, ec ) );
 
         if( c - buf < 1 )
-            return( POLARSSL_ERR_ASN1_BUF_TOO_SMALL );
+            return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );
         *--c = 0;
         pub_len += 1;
 
-        ASN1_CHK_ADD( pub_len, asn1_write_len( &c, buf, pub_len ) );
-        ASN1_CHK_ADD( pub_len, asn1_write_tag( &c, buf, ASN1_BIT_STRING ) );
+        MBEDTLS_ASN1_CHK_ADD( pub_len, mbedtls_asn1_write_len( &c, buf, pub_len ) );
+        MBEDTLS_ASN1_CHK_ADD( pub_len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_BIT_STRING ) );
 
-        ASN1_CHK_ADD( pub_len, asn1_write_len( &c, buf, pub_len ) );
-        ASN1_CHK_ADD( pub_len, asn1_write_tag( &c, buf,
-                            ASN1_CONTEXT_SPECIFIC | ASN1_CONSTRUCTED | 1 ) );
+        MBEDTLS_ASN1_CHK_ADD( pub_len, mbedtls_asn1_write_len( &c, buf, pub_len ) );
+        MBEDTLS_ASN1_CHK_ADD( pub_len, mbedtls_asn1_write_tag( &c, buf,
+                            MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 1 ) );
         len += pub_len;
 
         /* parameters */
-        ASN1_CHK_ADD( par_len, pk_write_ec_param( &c, buf, ec ) );
+        MBEDTLS_ASN1_CHK_ADD( par_len, pk_write_ec_param( &c, buf, ec ) );
 
-        ASN1_CHK_ADD( par_len, asn1_write_len( &c, buf, par_len ) );
-        ASN1_CHK_ADD( par_len, asn1_write_tag( &c, buf,
-                            ASN1_CONTEXT_SPECIFIC | ASN1_CONSTRUCTED | 0 ) );
+        MBEDTLS_ASN1_CHK_ADD( par_len, mbedtls_asn1_write_len( &c, buf, par_len ) );
+        MBEDTLS_ASN1_CHK_ADD( par_len, mbedtls_asn1_write_tag( &c, buf,
+                            MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 0 ) );
         len += par_len;
 
         /* privateKey: write as MPI then fix tag */
-        ASN1_CHK_ADD( len, asn1_write_mpi( &c, buf, &ec->d ) );
-        *c = ASN1_OCTET_STRING;
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &ec->d ) );
+        *c = MBEDTLS_ASN1_OCTET_STRING;
 
         /* version */
-        ASN1_CHK_ADD( len, asn1_write_int( &c, buf, 1 ) );
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_int( &c, buf, 1 ) );
 
-        ASN1_CHK_ADD( len, asn1_write_len( &c, buf, len ) );
-        ASN1_CHK_ADD( len, asn1_write_tag( &c, buf, ASN1_CONSTRUCTED |
-                                                    ASN1_SEQUENCE ) );
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) );
+        MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONSTRUCTED |
+                                                    MBEDTLS_ASN1_SEQUENCE ) );
     }
     else
-#endif /* POLARSSL_ECP_C */
-        return( POLARSSL_ERR_PK_FEATURE_UNAVAILABLE );
+#endif /* MBEDTLS_ECP_C */
+        return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
 
     return( (int) len );
 }
 
-#if defined(POLARSSL_PEM_WRITE_C)
+#if defined(MBEDTLS_PEM_WRITE_C)
 
 #define PEM_BEGIN_PUBLIC_KEY    "-----BEGIN PUBLIC KEY-----\n"
 #define PEM_END_PUBLIC_KEY      "-----END PUBLIC KEY-----\n"
@@ -297,7 +297,7 @@
  * Max sizes of key per types. Shown as tag + len (+ content).
  */
 
-#if defined(POLARSSL_RSA_C)
+#if defined(MBEDTLS_RSA_C)
 /*
  * RSA public keys:
  *  SubjectPublicKeyInfo  ::=  SEQUENCE  {          1 + 3
@@ -310,7 +310,7 @@
  *      publicExponent    INTEGER   -- e            1 + 3 + MPI_MAX + 1
  *  }
  */
-#define RSA_PUB_DER_MAX_BYTES   38 + 2 * POLARSSL_MPI_MAX_SIZE
+#define RSA_PUB_DER_MAX_BYTES   38 + 2 * MBEDTLS_MPI_MAX_SIZE
 
 /*
  * RSA private keys:
@@ -327,19 +327,19 @@
  *      otherPrimeInfos   OtherPrimeInfos OPTIONAL  0 (not supported)
  *  }
  */
-#define MPI_MAX_SIZE_2          POLARSSL_MPI_MAX_SIZE / 2 + \
-                                POLARSSL_MPI_MAX_SIZE % 2
-#define RSA_PRV_DER_MAX_BYTES   47 + 3 * POLARSSL_MPI_MAX_SIZE \
+#define MPI_MAX_SIZE_2          MBEDTLS_MPI_MAX_SIZE / 2 + \
+                                MBEDTLS_MPI_MAX_SIZE % 2
+#define RSA_PRV_DER_MAX_BYTES   47 + 3 * MBEDTLS_MPI_MAX_SIZE \
                                    + 5 * MPI_MAX_SIZE_2
 
-#else /* POLARSSL_RSA_C */
+#else /* MBEDTLS_RSA_C */
 
 #define RSA_PUB_DER_MAX_BYTES   0
 #define RSA_PRV_DER_MAX_BYTES   0
 
-#endif /* POLARSSL_RSA_C */
+#endif /* MBEDTLS_RSA_C */
 
-#if defined(POLARSSL_ECP_C)
+#if defined(MBEDTLS_ECP_C)
 /*
  * EC public keys:
  *  SubjectPublicKeyInfo  ::=  SEQUENCE  {      1 + 2
@@ -351,7 +351,7 @@
  *                                            + 2 * ECP_MAX (coords)    [1]
  *  }
  */
-#define ECP_PUB_DER_MAX_BYTES   30 + 2 * POLARSSL_ECP_MAX_BYTES
+#define ECP_PUB_DER_MAX_BYTES   30 + 2 * MBEDTLS_ECP_MAX_BYTES
 
 /*
  * EC private keys:
@@ -362,33 +362,33 @@
  *      publicKey  [1] BIT STRING OPTIONAL      1 + 2 + [1] above
  *    }
  */
-#define ECP_PRV_DER_MAX_BYTES   29 + 3 * POLARSSL_ECP_MAX_BYTES
+#define ECP_PRV_DER_MAX_BYTES   29 + 3 * MBEDTLS_ECP_MAX_BYTES
 
-#else /* POLARSSL_ECP_C */
+#else /* MBEDTLS_ECP_C */
 
 #define ECP_PUB_DER_MAX_BYTES   0
 #define ECP_PRV_DER_MAX_BYTES   0
 
-#endif /* POLARSSL_ECP_C */
+#endif /* MBEDTLS_ECP_C */
 
 #define PUB_DER_MAX_BYTES   RSA_PUB_DER_MAX_BYTES > ECP_PUB_DER_MAX_BYTES ? \
                             RSA_PUB_DER_MAX_BYTES : ECP_PUB_DER_MAX_BYTES
 #define PRV_DER_MAX_BYTES   RSA_PRV_DER_MAX_BYTES > ECP_PRV_DER_MAX_BYTES ? \
                             RSA_PRV_DER_MAX_BYTES : ECP_PRV_DER_MAX_BYTES
 
-int pk_write_pubkey_pem( pk_context *key, unsigned char *buf, size_t size )
+int mbedtls_pk_write_pubkey_pem( mbedtls_pk_context *key, unsigned char *buf, size_t size )
 {
     int ret;
     unsigned char output_buf[PUB_DER_MAX_BYTES];
     size_t olen = 0;
 
-    if( ( ret = pk_write_pubkey_der( key, output_buf,
+    if( ( ret = mbedtls_pk_write_pubkey_der( key, output_buf,
                                      sizeof(output_buf) ) ) < 0 )
     {
         return( ret );
     }
 
-    if( ( ret = pem_write_buffer( PEM_BEGIN_PUBLIC_KEY, PEM_END_PUBLIC_KEY,
+    if( ( ret = mbedtls_pem_write_buffer( PEM_BEGIN_PUBLIC_KEY, PEM_END_PUBLIC_KEY,
                                   output_buf + sizeof(output_buf) - ret,
                                   ret, buf, size, &olen ) ) != 0 )
     {
@@ -398,35 +398,35 @@
     return( 0 );
 }
 
-int pk_write_key_pem( pk_context *key, unsigned char *buf, size_t size )
+int mbedtls_pk_write_key_pem( mbedtls_pk_context *key, unsigned char *buf, size_t size )
 {
     int ret;
     unsigned char output_buf[PRV_DER_MAX_BYTES];
     const char *begin, *end;
     size_t olen = 0;
 
-    if( ( ret = pk_write_key_der( key, output_buf, sizeof(output_buf) ) ) < 0 )
+    if( ( ret = mbedtls_pk_write_key_der( key, output_buf, sizeof(output_buf) ) ) < 0 )
         return( ret );
 
-#if defined(POLARSSL_RSA_C)
-    if( pk_get_type( key ) == POLARSSL_PK_RSA )
+#if defined(MBEDTLS_RSA_C)
+    if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_RSA )
     {
         begin = PEM_BEGIN_PRIVATE_KEY_RSA;
         end = PEM_END_PRIVATE_KEY_RSA;
     }
     else
 #endif
-#if defined(POLARSSL_ECP_C)
-    if( pk_get_type( key ) == POLARSSL_PK_ECKEY )
+#if defined(MBEDTLS_ECP_C)
+    if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_ECKEY )
     {
         begin = PEM_BEGIN_PRIVATE_KEY_EC;
         end = PEM_END_PRIVATE_KEY_EC;
     }
     else
 #endif
-        return( POLARSSL_ERR_PK_FEATURE_UNAVAILABLE );
+        return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
 
-    if( ( ret = pem_write_buffer( begin, end,
+    if( ( ret = mbedtls_pem_write_buffer( begin, end,
                                   output_buf + sizeof(output_buf) - ret,
                                   ret, buf, size, &olen ) ) != 0 )
     {
@@ -435,6 +435,6 @@
 
     return( 0 );
 }
-#endif /* POLARSSL_PEM_WRITE_C */
+#endif /* MBEDTLS_PEM_WRITE_C */
 
-#endif /* POLARSSL_PK_WRITE_C */
+#endif /* MBEDTLS_PK_WRITE_C */