Add a test of the OID->MD map functions
diff --git a/ChangeLog b/ChangeLog
index 2822411..ef5b104 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -7,10 +7,10 @@
      rfc 5280 section 4.2.1.4.
    * It is now possible to use NIST key wrap mode via the mbedtls_cipher API.
      Contributed by Jack Lloyd and Fortanix Inc.
-   * It is now possible to perform RSA PKCS v1.5 signatures with RIPEMD-160 digest.
-     Contributed by Jack Lloyd and Fortanix Inc.
    * Add the Wi-SUN Field Area Network (FAN) device extended key usage.
    * Add the oid certificate policy x509 extension.
+   * It is now possible to perform RSA PKCS v1.5 signatures with RIPEMD-160 digest.
+     Contributed by Jack Lloyd and Fortanix Inc.
 
 Bugfix
    * Fix private key DER output in the key_app_writer example. File contents
diff --git a/tests/suites/test_suite_oid.data b/tests/suites/test_suite_oid.data
index 3d5d9db..3261935 100644
--- a/tests/suites/test_suite_oid.data
+++ b/tests/suites/test_suite_oid.data
@@ -57,3 +57,35 @@
 
 OID get x509 extension - wrong oid - id-ce
 oid_get_x509_extension:"551D":0
+
+OID hash id - id-md5
+depends_on:MBEDTLS_MD5_C
+oid_get_md_alg_id:"2A864886f70d0205":MBEDTLS_MD_MD5
+
+OID hash id - id-sha1
+depends_on:MBEDTLS_SHA1_C
+oid_get_md_alg_id:"2b0e03021a":MBEDTLS_MD_SHA1
+
+OID hash id - id-sha224
+depends_on:MBEDTLS_SHA256_C
+oid_get_md_alg_id:"608648016503040204":MBEDTLS_MD_SHA224
+
+OID hash id - id-sha256
+depends_on:MBEDTLS_SHA256_C
+oid_get_md_alg_id:"608648016503040201":MBEDTLS_MD_SHA256
+
+OID hash id - id-sha384
+depends_on:MBEDTLS_SHA512_C
+oid_get_md_alg_id:"608648016503040202":MBEDTLS_MD_SHA384
+
+OID hash id - id-sha512
+depends_on:MBEDTLS_SHA512_C
+oid_get_md_alg_id:"608648016503040203":MBEDTLS_MD_SHA512
+
+OID hash id - id-ripemd160
+depends_on:MBEDTLS_RIPEMD160_C
+oid_get_md_alg_id:"2b24030201":MBEDTLS_MD_RIPEMD160
+
+OID hash id - invalid oid
+oid_get_md_alg_id:"2B864886f70d0204":-1
+
diff --git a/tests/suites/test_suite_oid.function b/tests/suites/test_suite_oid.function
index cb8abe6..065295a 100644
--- a/tests/suites/test_suite_oid.function
+++ b/tests/suites/test_suite_oid.function
@@ -78,3 +78,29 @@
     }
 }
 /* END_CASE */
+
+/* BEGIN_CASE */
+void oid_get_md_alg_id( data_t *oid, int exp_md_id )
+{
+    mbedtls_asn1_buf md_oid = { 0, 0, NULL };
+    int ret;
+    mbedtls_md_type_t md_id = 0;
+
+    md_oid.tag = MBEDTLS_ASN1_OID;
+    md_oid.p = oid->x;
+    md_oid.len = oid->len;
+
+    ret = mbedtls_oid_get_md_alg( &md_oid, &md_id );
+
+    if( exp_md_id < 0 )
+    {
+        TEST_ASSERT( ret == MBEDTLS_ERR_OID_NOT_FOUND );
+        TEST_ASSERT( md_id == 0);
+    }
+    else
+    {
+        TEST_ASSERT( ret == 0 );
+        TEST_ASSERT( (mbedtls_md_type_t)exp_md_id == md_id );
+    }
+}
+/* END_CASE */