+/* NIST test vector "abc...opq" */
+DIGEST_TEST ( sha256_nist_abc_opq, &sha256_algorithm, DIGEST_NIST_ABC_OPQ,
+ DIGEST ( 0x24, 0x8d, 0x6a, 0x61, 0xd2, 0x06, 0x38, 0xb8, 0xe5,
+ 0xc0, 0x26, 0x93, 0x0c, 0x3e, 0x60, 0x39, 0xa3, 0x3c,
+ 0xe4, 0x59, 0x64, 0xff, 0x21, 0x67, 0xf6, 0xec, 0xed,
+ 0xd4, 0x19, 0xdb, 0x06, 0xc1 ) );
+
+/* Empty test vector (digest obtained from "sha224sum /dev/null") */
+DIGEST_TEST ( sha224_empty, &sha224_algorithm, DIGEST_EMPTY,
+ DIGEST ( 0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x2b, 0xc9, 0x47,
+ 0x61, 0x02, 0xbb, 0x28, 0x82, 0x34, 0xc4, 0x15, 0xa2,
+ 0xb0, 0x1f, 0x82, 0x8e, 0xa6, 0x2a, 0xc5, 0xb3, 0xe4,
+ 0x2f ) );
+
+/* NIST test vector "abc" */
+DIGEST_TEST ( sha224_nist_abc, &sha224_algorithm, DIGEST_NIST_ABC,
+ DIGEST ( 0x23, 0x09, 0x7d, 0x22, 0x34, 0x05, 0xd8, 0x22, 0x86,
+ 0x42, 0xa4, 0x77, 0xbd, 0xa2, 0x55, 0xb3, 0x2a, 0xad,
+ 0xbc, 0xe4, 0xbd, 0xa0, 0xb3, 0xf7, 0xe3, 0x6c, 0x9d,
+ 0xa7 ) );
+
+/* NIST test vector "abc...opq" */
+DIGEST_TEST ( sha224_nist_abc_opq, &sha224_algorithm, DIGEST_NIST_ABC_OPQ,
+ DIGEST ( 0x75, 0x38, 0x8b, 0x16, 0x51, 0x27, 0x76, 0xcc, 0x5d,
+ 0xba, 0x5d, 0xa1, 0xfd, 0x89, 0x01, 0x50, 0xb0, 0xc6,
+ 0x45, 0x5c, 0xb4, 0xf5, 0x8b, 0x19, 0x52, 0x52, 0x25,
+ 0x25 ) );