diff --git a/crypto/testmgr.h b/crypto/testmgr.h
index 26194db387db..8658cf00ea1f 100644
--- a/crypto/testmgr.h
+++ b/crypto/testmgr.h
@@ -1364,6 +1364,98 @@ static const struct kpp_testvec dh_tv_template[] = {
 	.expected_ss_size = 384,
 	},
 #endif /* IS_ENABLED(CONFIG_CRYPTO_DH_GROUPS_RFC7919) */
+#if IS_ENABLED(CONFIG_CRYPTO_DH_GROUPS_RFC3526)
+	{
+	.secret =
+#ifdef __LITTLE_ENDIAN
+	"\x01\x00" /* type */
+	"\x14\x01" /* len */
+	"\x06\x00\x00\x00" /* group_id == DH_GROUP_ID_MODP2048 */
+	"\x00\x01\x00\x00" /* key_size */
+	"\x00\x00\x00\x00" /* p_size */
+	"\x00\x00\x00\x00" /* g_size */
+#else
+	"\x00\x01" /* type */
+	"\x01\x14" /* len */
+	"\x00\x00\x00\x06" /* group_id == DH_GROUP_ID_MODP2048 */
+	"\x00\x00\x01\x00" /* key_size */
+	"\x00\x00\x00\x00" /* p_size */
+	"\x00\x00\x00\x00" /* g_size */
+#endif
+	/* xa */
+	"\x38\x77\xec\x02\xc5\xae\xc2\x1c\x4c\x5e\xf5\xa2\xfb\x7e\x06\xf2"
+	"\xa0\x32\x0f\x3d\xf5\xcb\x75\xd0\xd7\x47\x12\x06\xca\x11\x55\xe4"
+	"\x16\xff\x35\xd3\xda\x36\x69\x04\xc4\xd8\x63\x96\xd4\x1d\x92\x6d"
+	"\xd6\x1f\x4b\x22\x7f\xa8\x68\xae\x53\x46\x49\x5a\x06\xfd\x33\xb9"
+	"\x47\x7b\x2c\xaf\x5f\x52\x76\x2d\xe5\x46\x44\xd7\xf1\x5e\xdf\xaa"
+	"\x17\xb5\x3c\x86\x5e\x69\xf9\xf5\x4a\x86\xc6\x58\x77\x81\x88\x78"
+	"\x7d\x5b\xf6\xe3\xd7\x46\x4c\xaf\x75\xf8\x53\x76\xf6\xcc\x6d\xd2"
+	"\x8e\xb7\x0f\x4c\xea\x3e\x82\x55\x82\x34\x5c\x99\x32\x7c\x22\x4b"
+	"\xcc\xd7\xfd\x39\x72\x64\x27\xc6\x5a\x10\xc2\x97\x38\x20\x51\xd2"
+	"\xf3\xf0\x95\xe7\xe4\xfb\x5a\x1e\xb6\x08\x81\xda\xac\x7e\xdf\x85"
+	"\xad\xa5\xdb\xd1\x96\xc6\xab\x9c\x9b\x8e\xa5\x80\x0a\xf0\xce\xf6"
+	"\x60\xb2\x88\xc1\x3a\x77\xb3\x87\xd1\x39\x68\x56\x7b\x8c\x8a\xb4"
+	"\xb5\x35\xd6\x93\xdf\x8e\x43\x3c\x41\xb5\xb5\x5d\xdd\xd2\x36\x93"
+	"\xa3\x09\xeb\x9f\x6c\x13\xac\xcb\xa0\x50\x4e\x7c\x49\x20\xcf\xf7"
+	"\xa6\xfc\xd1\x1d\x50\x72\xdf\x76\x24\xc5\xb9\xb3\x68\x1d\xe2\xdd"
+	"\xd1\xcb\x1b\x53\x2c\xed\x75\xfc\xeb\x36\x20\x9d\x82\xca\xe5\xa7",
+	.b_public =
+	"\x75\x98\x23\x19\xc9\xc2\xe1\x59\x73\xc2\x1d\xc5\x2c\xad\x22\x90"
+	"\xa8\xa4\xb4\xfa\xd7\x67\x5b\xe9\xa1\x0e\x15\x3b\x5d\xae\xd3\x25"
+	"\x29\xfc\x26\x79\xd6\x86\xf2\x21\x20\x86\xd7\x17\xce\xe7\x6a\x74"
+	"\x3e\x2e\x8b\x62\x87\x62\xe9\x27\xc0\x57\xca\x5b\xaf\x86\x22\xd6"
+	"\xdd\xf6\x88\xd2\x86\x21\xf7\x39\x6a\x3f\x52\x17\x03\xdc\xb9\x44"
+	"\x03\xdf\xb5\x6e\x5d\x15\x50\x6f\xf8\x9a\x3c\xee\x9f\xc5\x01\x23"
+	"\xd8\x2d\xb8\x18\x37\xc8\xed\x7d\x46\x27\x03\xc9\xae\x3b\xbf\x9e"
+	"\x4e\x98\x91\x30\x56\xcb\x09\x6b\x8e\xd3\xe5\x87\xfe\x82\x66\x36"
+	"\x2c\xee\x88\x74\x00\x8a\x2d\x36\x39\x2b\xe7\xbd\x18\x21\x36\xd0"
+	"\x98\x34\x6c\xb1\x4f\xbf\xd0\x0c\xd3\x6c\x64\x2e\x04\xfa\x68\x13"
+	"\x51\xaf\x1b\xc8\xc3\xbd\x13\x44\x72\x89\xd5\xa3\xd8\x83\x22\xf1"
+	"\x92\xeb\x5a\x70\x5e\x91\x1e\x86\xb9\x2f\x18\x44\x8c\x5a\xe0\x18"
+	"\x6c\x7a\xc6\x20\x27\x27\xae\x6a\x9e\x1b\x9b\xae\x13\xc9\x73\x22"
+	"\x0c\x0d\xdf\x97\x9c\x87\x06\x48\xdc\xe0\x8d\x83\xe1\x32\x8a\x8f"
+	"\x80\x60\x70\x7c\x7e\x10\x10\xf0\xd7\x49\x09\xfc\xf0\x0e\x11\x3f"
+	"\xb4\x5a\x9e\x3d\x38\x28\x3d\x46\x5a\x63\x6c\x9e\x14\xe3\x7c\x13",
+	.expected_a_public =
+	"\xca\x88\x57\x90\x69\x2d\x30\x40\xbc\x97\xd0\x79\x4b\x9e\x8c\x3c"
+	"\x55\x78\x01\x81\x0c\x62\xa3\x51\x80\xcb\x83\x56\x70\x50\xe8\x41"
+	"\x2d\x72\x0c\x7a\x1d\x9b\xf7\x0d\xe6\x81\x2b\x51\xca\xf7\x6c\xf0"
+	"\x45\x92\x9d\x7e\x3c\xe3\x22\xbc\x16\x5a\x2f\x92\x79\xbe\xea\xbe"
+	"\xa5\x73\xf7\xfa\xbf\x86\x71\x9b\x28\x4f\x32\x86\x44\xdb\xc4\x0f"
+	"\xb6\x30\xdd\x95\xa5\xcb\xa8\x16\x96\x76\x51\x27\xfb\x6e\xc1\x06"
+	"\x19\x28\x8a\xf0\x3d\x92\xe8\x6b\x57\x2a\xfc\x63\x96\xea\xf0\x9b"
+	"\x4e\xbe\xeb\x42\x38\x66\x0d\x47\x6b\xc6\x2b\xb1\xe6\x49\xe4\x82"
+	"\xcf\x74\xb4\x5a\x13\x7b\xaf\x22\x53\x34\x5b\xf2\x6f\xda\x5e\x51"
+	"\x00\xd1\x37\x9d\x9c\x8b\x3e\xe9\x05\x37\x8d\x01\xb9\x64\x06\xdd"
+	"\xee\x10\xa2\x96\xa1\x18\xbf\xb8\xb5\x77\x24\xda\xb0\x7f\x07\x7e"
+	"\x98\xf4\xeb\x0e\x80\x39\x54\x1e\x7e\xf6\x5c\x6b\x02\xf5\x91\x5e"
+	"\x3e\xb2\xa5\xe0\x13\x25\x9b\x04\xf9\xb3\x42\x82\xfe\x6a\x11\x94"
+	"\x4b\x01\x35\x43\xb5\x32\x20\x6e\xc0\x91\xad\x1e\xbe\xdf\xb6\x11"
+	"\x5c\x91\x83\x66\xa0\xe5\x27\x82\x7d\x45\xa8\x70\xa1\x37\xcd\x24"
+	"\xab\xb3\xb5\x13\x97\x61\x72\x7b\x03\x58\x06\xd9\x90\x78\x3c\xd1",
+	.expected_ss =
+	"\xba\x1e\x8c\x44\x39\x9e\xab\xe4\xe2\x75\xae\x54\xe3\xa9\xde\xb8"
+	"\x21\x3f\x46\x54\xb8\xea\xe7\xe3\xd6\x1e\xd0\xf3\x33\x2c\xb9\xb7"
+	"\xbd\x76\x63\xf1\xec\x2e\xf9\xe7\x3b\xa4\xa8\x94\xba\x9b\x34\x1b"
+	"\xfc\xa8\xbd\x89\xd2\x11\xb1\xa0\x02\x76\xe1\xb3\xe9\x89\x63\xc0"
+	"\xc2\xda\x77\x53\xc5\x53\x2d\x1d\x0e\xa5\x14\xac\xf1\x91\xfa\x5b"
+	"\x52\x8e\xeb\x73\x54\x7f\x99\xa6\x39\x17\x32\xcc\x4d\x59\x3a\x4c"
+	"\xd7\xea\xb3\x70\x84\xb4\x04\xb8\xb2\xcd\x77\x6e\x2b\xa1\xc6\xeb"
+	"\xa1\x2e\x0c\x8f\xaa\xd1\x83\xe5\x66\x12\x2c\x99\x72\x52\x2a\xfd"
+	"\x67\x0d\x14\xd7\x11\xd3\xf1\x77\x5f\x86\x06\x21\xcb\x7a\x14\x78"
+	"\x94\x6f\x42\xe9\xa9\xf4\x22\x8e\x94\x6a\x74\xfb\x13\x30\xd3\x41"
+	"\xde\xd3\xac\x36\x88\xc9\x24\xe6\x55\x20\x79\xfb\xd7\x81\x6a\xac"
+	"\x3b\x91\xcb\x34\x33\xb8\x61\x86\xf6\x2c\x88\x14\xe7\x64\x23\xaf"
+	"\x05\x34\x31\x9a\x56\x1e\xe5\xd5\xb6\xe6\x79\xd0\x2d\xcf\x4c\x41"
+	"\x95\x16\x08\xa8\x2c\xdd\x7a\xde\xe0\x77\x10\x71\x9b\x98\xfc\xc1"
+	"\x2c\x48\xd4\xfa\x54\x45\x44\xed\x7f\x42\x92\x63\x9c\xf6\x81\x7f"
+	"\xe0\x66\x55\x6e\x69\xa5\x52\x0b\x4d\x86\x06\x85\xb2\xb0\x7e\x47",
+	.secret_size = 276,
+	.b_public_size = 256,
+	.expected_a_public_size = 256,
+	.expected_ss_size = 256,
+	},
+#endif /* IS_ENABLED(CONFIG_CRYPTO_DH_GROUPS_RFC3526) */
 	{
 	.secret =
 #ifdef __LITTLE_ENDIAN
