diff --git a/include/psa/crypto.h b/include/psa/crypto.h
index 7e61565..3eee382 100644
--- a/include/psa/crypto.h
+++ b/include/psa/crypto.h
@@ -136,7 +136,39 @@
 #define PSA_KEY_TYPE_IS_ECC(type)                                       \
     (((type) & PSA_KEY_TYPE_ECC_TEST_MASK) == PSA_KEY_TYPE_ECC_TEST_VALUE)
 
-typedef uint32_t psa_algorithm_type_t;
+typedef uint32_t psa_algorithm_t;
+
+#define PSA_ALG_HASH_BITS                       0x01000000
+#define PSA_ALG_RSA_HASH_MASK                   0x000000ff
+#define PSA_ALG_MD2                             0x01000001
+#define PSA_ALG_MD4                             0x01000002
+#define PSA_ALG_MD5                             0x01000003
+#define PSA_ALG_SHA_256_128                     0x01000004
+#define PSA_ALG_RIPEMD160                       0x01000005
+#define PSA_ALG_SHA_1                           0x01000006
+#define PSA_ALG_SHA_256_160                     0x01000007
+#define PSA_ALG_SHA_224                         0x01000008
+#define PSA_ALG_SHA_256                         0x01000009
+#define PSA_ALG_SHA_384                         0x0100000a
+#define PSA_ALG_SHA_512                         0x0100000b
+#define PSA_ALG_SHA_512_224                     0x0100000c
+#define PSA_ALG_SHA_512_256                     0x0100000d
+#define PSA_ALG_SHA3_224                        0x01000010
+#define PSA_ALG_SHA3_256                        0x01000011
+#define PSA_ALG_SHA3_384                        0x01000012
+#define PSA_ALG_SHA3_512                        0x01000013
+
+#define PSA_ALG_RSA_PKCS1V15_RAW                0x40000100
+#define PSA_ALG_RSA_PSS_MGF1                    0x40000200
+#define PSA_ALG_RSA_OAEP                        0x40000300
+#define PSA_ALG_RSA_PKCS1V15(hash_alg)          \
+    (PSA_ALG_RSA_PKCS1V15_RAW | ((hash_alg) & PSA_ALG_RSA_HASH_MASK))
+#define PSA_ALG_IS_RSA_PKCS1V15(alg)            \
+    (((alg) & 0x7fffff00) == PSA_ALG_RSA_PKCS1V15_RAW)
+#define PSA_ALG_RSA_GET_HASH(alg)               \
+    (((alg) & PSA_ALG_RSA_HASH_MASK) | PSA_ALG_HASH_BITS)
+
+#define PSA_ALG_VENDOR_FLAG                     0x80000000
 
 /**@}*/
 
@@ -208,6 +240,40 @@
                             size_t data_size,
                             size_t *data_length);
 
+
+/**@}*/
+
+/** \defgroup asymmetric Asymmetric cryptography
+ * @{
+ */
+
+/**
+ * \brief Sign a hash or short message with a private key.
+ *
+ */
+psa_status_t psa_asymmetric_sign(psa_key_slot_t key,
+                                 psa_algorithm_t alg,
+                                 const uint8_t *hash,
+                                 size_t hash_length,
+                                 const uint8_t *salt,
+                                 size_t salt_length,
+                                 uint8_t *signature,
+                                 size_t signature_size,
+                                 size_t *signature_length);
+
+/**
+ * \brief Verify the signature a hash or short message using a public key.
+ *
+ */
+psa_status_t psa_asymmetric_verify(psa_key_slot_t key,
+                                   psa_algorithm_t alg,
+                                   const uint8_t *hash,
+                                   size_t hash_length,
+                                   const uint8_t *salt,
+                                   size_t salt_length,
+                                   uint8_t *signature,
+                                   size_t signature_size);
+
 /**@}*/
 
 #ifdef __cplusplus
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 741f5d1..2565232 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -41,6 +41,8 @@
 #include "mbedtls/ctr_drbg.h"
 #include "mbedtls/ecp.h"
 #include "mbedtls/entropy.h"
+#include "mbedtls/md.h"
+#include "mbedtls/md_internal.h"
 #include "mbedtls/pk.h"
 #include "mbedtls/pk_internal.h"
 #include "mbedtls/rsa.h"
@@ -351,6 +353,186 @@
 
 
 /****************************************************************/
+/* Message digests */
+/****************************************************************/
+
+static const mbedtls_md_info_t *mbedtls_md_info_of_psa( psa_algorithm_t alg )
+{
+    switch( alg )
+    {
+#if defined(MBEDTLS_MD2_C)
+        case PSA_ALG_MD2:
+            return( &mbedtls_md2_info );
+#endif
+#if defined(MBEDTLS_MD4_C)
+        case PSA_ALG_MD4:
+            return( &mbedtls_md4_info );
+#endif
+#if defined(MBEDTLS_MD5_C)
+        case PSA_ALG_MD5:
+            return( &mbedtls_md5_info );
+#endif
+#if defined(MBEDTLS_RIPEMD160_C)
+        case PSA_ALG_RIPEMD160:
+            return( &mbedtls_ripemd160_info );
+#endif
+#if defined(MBEDTLS_SHA1_C)
+        case PSA_ALG_SHA_1:
+            return( &mbedtls_sha1_info );
+#endif
+#if defined(MBEDTLS_SHA256_C)
+        case PSA_ALG_SHA_224:
+            return( &mbedtls_sha224_info );
+        case PSA_ALG_SHA_256:
+            return( &mbedtls_sha256_info );
+#endif
+#if defined(MBEDTLS_SHA512_C)
+        case PSA_ALG_SHA_384:
+            return( &mbedtls_sha384_info );
+        case PSA_ALG_SHA_512:
+            return( &mbedtls_sha512_info );
+#endif
+        default:
+            return( NULL );
+    }
+}
+
+#if 0
+static psa_algorithm_t mbedtls_md_alg_to_psa( mbedtls_md_type_t md_alg )
+{
+    switch( md_alg )
+    {
+        case MBEDTLS_MD_NONE:
+            return( 0 );
+        case MBEDTLS_MD_MD2:
+            return( PSA_ALG_MD2 );
+        case MBEDTLS_MD_MD4:
+            return( PSA_ALG_MD4 );
+        case MBEDTLS_MD_MD5:
+            return( PSA_ALG_MD5 );
+        case MBEDTLS_MD_SHA1:
+            return( PSA_ALG_SHA_1 );
+        case MBEDTLS_MD_SHA224:
+            return( PSA_ALG_SHA_224 );
+        case MBEDTLS_MD_SHA256:
+            return( PSA_ALG_SHA_256 );
+        case MBEDTLS_MD_SHA384:
+            return( PSA_ALG_SHA_384 );
+        case MBEDTLS_MD_SHA512:
+            return( PSA_ALG_SHA_512 );
+        case MBEDTLS_MD_RIPEMD160:
+            return( PSA_ALG_RIPEMD160 );
+        default:
+            return( MBEDTLS_MD_NOT_SUPPORTED );
+    }
+}
+#endif
+
+
+
+/****************************************************************/
+/* Asymmetric cryptography */
+/****************************************************************/
+
+psa_status_t psa_asymmetric_sign(psa_key_slot_t key,
+                                 psa_algorithm_t alg,
+                                 const uint8_t *hash,
+                                 size_t hash_length,
+                                 const uint8_t *salt,
+                                 size_t salt_length,
+                                 uint8_t *signature,
+                                 size_t signature_size,
+                                 size_t *signature_length)
+{
+    key_slot_t *slot;
+
+    if( key == 0 || key > MBEDTLS_PSA_KEY_SLOT_COUNT )
+        return( PSA_ERROR_EMPTY_SLOT );
+    slot = &global_data.key_slots[key];
+    if( slot->type == PSA_KEY_TYPE_NONE )
+        return( PSA_ERROR_EMPTY_SLOT );
+    if( ! PSA_KEY_TYPE_IS_KEYPAIR( slot->type ) )
+        return( PSA_ERROR_INVALID_ARGUMENT );
+
+    (void) salt;
+    (void) salt_length;
+
+#if defined(MBEDTLS_RSA_C)
+    if( slot->type == PSA_KEY_TYPE_RSA_KEYPAIR )
+    {
+        mbedtls_rsa_context *rsa = slot->data.rsa;
+        int ret;
+        psa_algorithm_t hash_alg = PSA_ALG_RSA_GET_HASH( alg );
+        const mbedtls_md_info_t *md_info = mbedtls_md_info_of_psa( hash_alg );
+        mbedtls_md_type_t md_alg =
+            hash_alg == 0 ? MBEDTLS_MD_NONE : mbedtls_md_get_type( md_info );
+        if( md_alg == MBEDTLS_MD_NONE )
+        {
+#if SIZE_MAX > UINT_MAX
+            if( hash_length > UINT_MAX )
+                return( PSA_ERROR_INVALID_ARGUMENT );
+#endif
+        }
+        else
+        {
+            if( mbedtls_md_get_size( md_info ) != hash_length )
+                return( PSA_ERROR_INVALID_ARGUMENT );
+            if( md_info == NULL )
+                return( PSA_ERROR_NOT_SUPPORTED );
+        }
+        if( signature_size < rsa->len )
+            return( PSA_ERROR_BUFFER_TOO_SMALL );
+#if defined(MBEDTLS_PKCS1_V15)
+        if( PSA_ALG_IS_RSA_PKCS1V15( alg ) )
+        {
+            mbedtls_rsa_set_padding( rsa, MBEDTLS_RSA_PKCS_V15,
+                                     MBEDTLS_MD_NONE );
+            ret = mbedtls_rsa_pkcs1_sign( rsa,
+                                          mbedtls_ctr_drbg_random,
+                                          &global_data.ctr_drbg,
+                                          MBEDTLS_RSA_PRIVATE,
+                                          md_alg, hash_length, hash,
+                                          signature );
+        }
+        else
+#endif /* MBEDTLS_PKCS1_V15 */
+#if defined(MBEDTLS_PKCS1_V21)
+        if( alg == PSA_ALG_RSA_PSS_MGF1 )
+        {
+            mbedtls_rsa_set_padding( rsa, MBEDTLS_RSA_PKCS_V21, md_alg );
+            ret = mbedtls_rsa_rsassa_pss_sign( rsa,
+                                               mbedtls_ctr_drbg_random,
+                                               &global_data.ctr_drbg,
+                                               MBEDTLS_RSA_PRIVATE,
+                                               md_alg, hash_length, hash,
+                                               signature );
+        }
+        else
+#endif /* MBEDTLS_PKCS1_V21 */
+        {
+            return( PSA_ERROR_INVALID_ARGUMENT );
+        }
+        *signature_length = ( ret == 0 ? rsa->len : 0 );
+        return( mbedtls_to_psa_error( ret ) );
+    }
+    else
+#endif /* defined(MBEDTLS_RSA_C) */
+#if defined(MBEDTLS_ECP_C)
+    if( PSA_KEY_TYPE_IS_ECC( slot->type ) )
+    {
+        // TODO
+        return( PSA_ERROR_NOT_SUPPORTED );
+    }
+    else
+#endif /* defined(MBEDTLS_ECP_C) */
+    {
+        return( PSA_ERROR_NOT_SUPPORTED );
+    }
+}
+
+
+
+/****************************************************************/
 /* Module setup */
 /****************************************************************/
 
diff --git a/tests/suites/test_suite_psa_crypto.data b/tests/suites/test_suite_psa_crypto.data
index e8407a3..51fbf3a 100644
--- a/tests/suites/test_suite_psa_crypto.data
+++ b/tests/suites/test_suite_psa_crypto.data
@@ -36,3 +36,16 @@
 #PSA import/export EC secp256r1: good
 #depends_on:MBEDTLS_PK_C:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
 #import_export:"3077020101042049c9a8c18c4b885638c431cf1df1c994131609b580d4fd43a0cab17db2f13eeea00a06082a8648ce3d030107a144034200047772656f814b399279d5e1f1781fac6f099a3c5ca1b0e35351834b08b65e0b572590cdaf8f769361bcf34acfc11e5e074e8426bdde04be6e653945449617de45":PSA_KEY_TYPE_ECC_NISTP256R1:256:0:PSA_SUCCESS:1
+#
+PSA sign RSA PKCS#1 v1.5, raw
+depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_PKCS1_V15
+sign_deterministic:PSA_KEY_TYPE_RSA_KEYPAIR:"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":PSA_ALG_RSA_PKCS1V15_RAW:"616263":"2c7744983f023ac7bb1c55529d83ed11a76a7898a1bb5ce191375a4aa7495a633d27879ff58eba5a57371c34feb1180e8b850d552476ebb5634df620261992f12ebee9097041dbbea85a42d45b344be5073ceb772ffc604954b9158ba81ec3dc4d9d65e3ab7aa318165f38c36f841f1c69cb1cfa494aa5cbb4d6c0efbafb043a"
+
+PSA sign RSA PKCS#1 v1.5 SHA-256
+sign_deterministic:PSA_KEY_TYPE_RSA_KEYPAIR:"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":PSA_ALG_RSA_PKCS1V15(PSA_ALG_SHA_256):"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad":"a73664d55b39c7ea6c1e5b5011724a11e1d7073d3a68f48c836fad153a1d91b6abdbc8f69da13b206cc96af6363b114458b026af14b24fab8929ed634c6a2acace0bcc62d9bb6a984afbcbfcd3a0608d32a2bae535b9cd1ecdf9dd281db1e0025c3bfb5512963ec3b98ddaa69e38bc3c84b1b61a04e5648640856aacc6fc7311"
+
+PSA sign RSA PKCS#1 v1.5 SHA-256, wrong hash size
+sign_fail:PSA_KEY_TYPE_RSA_KEYPAIR:"3082025e02010002818100af057d396ee84fb75fdbb5c2b13c7fe5a654aa8aa2470b541ee1feb0b12d25c79711531249e1129628042dbbb6c120d1443524ef4c0e6e1d8956eeb2077af12349ddeee54483bc06c2c61948cd02b202e796aebd94d3a7cbf859c2c1819c324cb82b9cd34ede263a2abffe4733f077869e8660f7d6834da53d690ef7985f6bc3020301000102818100874bf0ffc2f2a71d14671ddd0171c954d7fdbf50281e4f6d99ea0e1ebcf82faa58e7b595ffb293d1abe17f110b37c48cc0f36c37e84d876621d327f64bbe08457d3ec4098ba2fa0a319fba411c2841ed7be83196a8cdf9daa5d00694bc335fc4c32217fe0488bce9cb7202e59468b1ead119000477db2ca797fac19eda3f58c1024100e2ab760841bb9d30a81d222de1eb7381d82214407f1b975cbbfe4e1a9467fd98adbd78f607836ca5be1928b9d160d97fd45c12d6b52e2c9871a174c66b488113024100c5ab27602159ae7d6f20c3c2ee851e46dc112e689e28d5fcbbf990a99ef8a90b8bb44fd36467e7fc1789ceb663abda338652c3c73f111774902e840565927091024100b6cdbd354f7df579a63b48b3643e353b84898777b48b15f94e0bfc0567a6ae5911d57ad6409cf7647bf96264e9bd87eb95e263b7110b9a1f9f94acced0fafa4d024071195eec37e8d257decfc672b07ae639f10cbb9b0c739d0c809968d644a94e3fd6ed9287077a14583f379058f76a8aecd43c62dc8c0f41766650d725275ac4a1024100bb32d133edc2e048d463388b7be9cb4be29f4b6250be603e70e3647501c97ddde20a4e71be95fd5e71784e25aca4baf25be5738aae59bbfe1c997781447a2b24":PSA_ALG_RSA_PKCS1V15(PSA_ALG_SHA_256):"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015":128:PSA_ERROR_INVALID_ARGUMENT
+
+PSA sign RSA PKCS#1 v1.5 SHA-256, output buffer too small
+sign_fail:PSA_KEY_TYPE_RSA_KEYPAIR:"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":PSA_ALG_RSA_PKCS1V15(PSA_ALG_SHA_256):"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad":127:PSA_ERROR_BUFFER_TOO_SMALL
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index 6fa10dd..3551570 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -132,3 +132,98 @@
     mbedtls_psa_crypto_free( );
 }
 /* END_CASE */
+
+/* BEGIN_CASE */
+void sign_deterministic( int key_type_arg, char *key_hex,
+                         int alg_arg, char *input_hex, char *output_hex )
+{
+    int slot = 1;
+    psa_key_type_t key_type = key_type_arg;
+    psa_algorithm_t alg = alg_arg;
+    unsigned char *key_data = NULL;
+    size_t key_size;
+    unsigned char *input_data = NULL;
+    size_t input_size;
+    unsigned char *output_data = NULL;
+    size_t output_size;
+    unsigned char signature[512];
+    size_t signature_length;
+
+    key_data = mbedtls_calloc( 1, strlen( key_hex ) / 2 );
+    TEST_ASSERT( key_data != NULL );
+    key_size = unhexify( key_data, key_hex );
+    input_data = mbedtls_calloc( 1, strlen( input_hex ) / 2 );
+    TEST_ASSERT( input_data != NULL );
+    input_size = unhexify( input_data, input_hex );
+    output_data = mbedtls_calloc( 1, strlen( output_hex ) / 2 );
+    TEST_ASSERT( output_data != NULL );
+    output_size = unhexify( output_data, output_hex );
+
+    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );
+
+    TEST_ASSERT( psa_import_key( slot, key_type,
+                                 key_data, key_size ) == PSA_SUCCESS );
+
+    TEST_ASSERT( psa_asymmetric_sign( slot, alg,
+                                      input_data, input_size,
+                                      NULL, 0,
+                                      signature, sizeof( signature ),
+                                      &signature_length ) == PSA_SUCCESS );
+    TEST_ASSERT( signature_length == output_size );
+    TEST_ASSERT( memcmp( signature, output_data, output_size ) == 0 );
+
+exit:
+    psa_destroy_key( slot );
+    mbedtls_free( key_data );
+    mbedtls_free( input_data );
+    mbedtls_free( output_data );
+    mbedtls_psa_crypto_free( );
+}
+/* END_CASE */
+
+/* BEGIN_CASE */
+void sign_fail( int key_type_arg, char *key_hex,
+                int alg_arg, char *input_hex,
+                int signature_size, int expected_status_arg )
+{
+    int slot = 1;
+    psa_key_type_t key_type = key_type_arg;
+    psa_algorithm_t alg = alg_arg;
+    unsigned char *key_data = NULL;
+    size_t key_size;
+    unsigned char *input_data = NULL;
+    size_t input_size;
+    psa_status_t actual_status;
+    psa_status_t expected_status = expected_status_arg;
+    unsigned char *signature;
+    size_t signature_length;
+
+    key_data = mbedtls_calloc( 1, strlen( key_hex ) / 2 );
+    TEST_ASSERT( key_data != NULL );
+    key_size = unhexify( key_data, key_hex );
+    input_data = mbedtls_calloc( 1, strlen( input_hex ) / 2 );
+    TEST_ASSERT( input_data != NULL );
+    input_size = unhexify( input_data, input_hex );
+    signature = mbedtls_calloc( 1, signature_size );
+    TEST_ASSERT( signature != NULL );
+
+    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );
+
+    TEST_ASSERT( psa_import_key( slot, key_type,
+                                 key_data, key_size ) == PSA_SUCCESS );
+
+    actual_status = psa_asymmetric_sign( slot, alg,
+                                         input_data, input_size,
+                                         NULL, 0,
+                                         signature, signature_size,
+                                         &signature_length );
+    TEST_ASSERT( actual_status == expected_status );
+
+exit:
+    psa_destroy_key( slot );
+    mbedtls_free( key_data );
+    mbedtls_free( input_data );
+    mbedtls_free( signature );
+    mbedtls_psa_crypto_free( );
+}
+/* END_CASE */