Add DSA SigVer vectors loader
diff --git a/tests/utils.py b/tests/utils.py
index 6356039..688260b 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -431,6 +431,72 @@
return vectors
+def load_fips_dsa_sig_ver_vectors(vector_data):
+ """
+ Loads data out of the FIPS DSA SigVer vector files.
+ """
+ vectors = []
+ sha_regex = re.compile(
+ r"\[mod = L=...., N=..., SHA-(?P<sha>1|224|256|384|512)\]"
+ )
+ # When reading_key_data is set to True it tells the loader to continue
+ # constructing dictionaries. We set reading_key_data to False during the
+ # blocks of the vectors of N=224 because we don't support it.
+ reading_key_data = True
+ for line in vector_data:
+ line = line.strip()
+
+ if not line or line.startswith("#"):
+ continue
+
+ sha_match = sha_regex.match(line)
+ if sha_match:
+ digest_algorithm = "SHA-{0}".format(sha_match.group("sha"))
+
+ elif line.startswith("[mod = L=2048, N=224"):
+ reading_key_data = False
+ continue
+ elif line.startswith("[mod = L=2048, N=256, SHA-1"):
+ reading_key_data = True
+ continue
+
+ if not reading_key_data or line.startswith("[mod"):
+ continue
+
+ name, value = [c.strip() for c in line.split("=")]
+
+ if name == "P":
+ vectors.append({'p': int(value, 16),
+ 'digest_algorithm': digest_algorithm})
+ elif name == "Q":
+ vectors[-1]['q'] = int(value, 16)
+ elif name == "G":
+ vectors[-1]['g'] = int(value, 16)
+ elif name == "Msg" and 'msg' not in vectors[-1]:
+ hexmsg = value.strip().encode("ascii")
+ vectors[-1]['msg'] = binascii.unhexlify(hexmsg)
+ elif name == "Msg" and 'msg' in vectors[-1]:
+ hexmsg = value.strip().encode("ascii")
+ vectors.append({'p': vectors[-1]['p'],
+ 'q': vectors[-1]['q'],
+ 'g': vectors[-1]['g'],
+ 'digest_algorithm':
+ vectors[-1]['digest_algorithm'],
+ 'msg': binascii.unhexlify(hexmsg)})
+ elif name == "X":
+ vectors[-1]['x'] = int(value, 16)
+ elif name == "Y":
+ vectors[-1]['y'] = int(value, 16)
+ elif name == "R":
+ vectors[-1]['r'] = int(value, 16)
+ elif name == "S":
+ vectors[-1]['s'] = int(value, 16)
+ elif name == "Result":
+ vectors[-1]['result'] = value.split("(")[0].strip()
+
+ return vectors
+
+
# http://tools.ietf.org/html/rfc4492#appendix-A
_ECDSA_CURVE_NAMES = {
"P-192": "secp192r1",