diff --git a/letsencrypt/client/client.py b/letsencrypt/client/client.py
index b6f507688..4765014ec 100644
--- a/letsencrypt/client/client.py
+++ b/letsencrypt/client/client.py
@@ -118,11 +118,6 @@ class Client(object):
         # Make sure we have key and csr to perform challenges
         self.init_key_csr()
 
-        # TODO: Handle this exception/problem
-        if not crypto_util.csr_matches_names(self.csr.data, self.names):
-            raise errors.LetsEncryptClientError(
-                "CSR subject does not contain one of the specified names")
-
         # Perform Challenges
         responses, challenge_objs = self.verify_identity(challenge_msg)
         # Get Authorization
diff --git a/letsencrypt/client/crypto_util.py b/letsencrypt/client/crypto_util.py
index d19cbc0da..554ccf684 100644
--- a/letsencrypt/client/crypto_util.py
+++ b/letsencrypt/client/crypto_util.py
@@ -1,6 +1,5 @@
 """Let's Encrypt client crypto utility functions"""
 import binascii
-import hashlib
 import logging
 import time
 
@@ -15,13 +14,6 @@ from letsencrypt.client import CONFIG
 from letsencrypt.client import le_util
 
 
-# TODO: All of these functions need unit tests
-
-def b64_cert_to_pem(b64_der_cert):
-    return M2Crypto.X509.load_cert_der_string(
-        le_util.jose_b64decode(b64_der_cert)).as_pem()
-
-
 def create_sig(msg, key_str, nonce=None, nonce_len=CONFIG.NONCE_SIZE):
     """Create signature with nonce prepended to the message.
 
@@ -76,27 +68,15 @@ def leading_zeros(arg):
     return arg
 
 
-def sha256(arg):
-    return hashlib.sha256(arg).hexdigest()
-
-
-# based on M2Crypto unit test written by Toby Allsopp
-def make_key(bits=CONFIG.RSA_KEY_SIZE):
-    """
-    Returns new RSA key in PEM form with specified bits
-    """
-    # Python Crypto module doesn't produce any stdout
-    key = Crypto.PublicKey.RSA.generate(bits)
-    # rsa = M2Crypto.RSA.gen_key(bits, 65537)
-    # key_pem = rsa.as_pem(cipher=None)
-    # rsa = None # should not be freed here
-
-    return key.exportKey(format='PEM')
-
-
 def make_csr(key_str, domains):
-    """
-    Returns new CSR in PEM and DER form using key_file containing all domains
+    """Generate a CSR.
+
+    :param str key_str: RSA key.
+    :param list domains: Domains included in the certificate.
+
+    :returns: new CSR in PEM and DER form containing all domains
+    :rtype: tuple
+
     """
     assert domains, "Must provide one or more hostnames for the CSR."
     rsa_key = M2Crypto.RSA.load_key_string(key_str)
@@ -115,7 +95,7 @@ def make_csr(key_str, domains):
 
     extstack = M2Crypto.X509.X509_Extension_Stack()
     ext = M2Crypto.X509.new_extension(
-        'subjectAltName', ", ".join(["DNS:%s" % d for d in domains]))
+        'subjectAltName', ", ".join("DNS:%s" % d for d in domains))
 
     extstack.push(ext)
     csr.add_extensions(extstack)
@@ -126,10 +106,82 @@ def make_csr(key_str, domains):
     return csr.as_pem(), csr.as_der()
 
 
-def make_ss_cert(key_str, domains):
+# WARNING: the csr and private key file are possible attack vectors for TOCTOU
+# We should either...
+# A. Do more checks to verify that the CSR is trusted/valid
+# B. Audit the parsing code for vulnerabilities
+
+def valid_csr(csr):
+    """Validate CSR.
+
+    Check if `csr` is a valid CSR for the given domains.
+
+    :param str csr: CSR in PEM.
+
+    :returns: Validity of CSR.
+    :rtype: bool
+
+    """
+    try:
+        csr_obj = M2Crypto.X509.load_request_string(csr)
+        return bool(csr_obj.verify(csr_obj.get_pubkey()))
+    except M2Crypto.X509.X509Error:
+        return False
+
+
+def csr_matches_pubkey(csr, privkey):
+    """Does private key correspond to the subject public key in the CSR?
+
+    :param str csr: CSR in PEM.
+    :param str privkey: Private key file contents
+
+    :returns: Correspondence of private key to CSR subject public key.
+    :rtype: bool
+
+    """
+    csr_obj = M2Crypto.X509.load_request_string(csr)
+    privkey_obj = M2Crypto.RSA.load_key_string(privkey)
+    return csr_obj.get_pubkey().get_rsa().pub() == privkey_obj.pub()
+
+
+# based on M2Crypto unit test written by Toby Allsopp
+def make_key(bits=CONFIG.RSA_KEY_SIZE):
+    """Generate PEM encoded RSA key.
+
+    :param int bits: Number of bits, at least 1024.
+
+    :returns: new RSA key in PEM form with specified number of bits
+    :rtype: str
+
+    """
+    # rsa = M2Crypto.RSA.gen_key(bits, 65537)
+    # key_pem = rsa.as_pem(cipher=None)
+    # rsa = None # should not be freed here
+    # Python Crypto module doesn't produce any stdout
+    return Crypto.PublicKey.RSA.generate(bits).exportKey(format='PEM')
+
+
+def valid_privkey(privkey):
+    """Is valid RSA private key?
+
+    :param str privkey: Private key file contents
+
+    :returns: Validity of private key.
+    :rtype: bool
+
+    """
+    try:
+        return bool(M2Crypto.RSA.load_key_string(privkey).check_key())
+    except M2Crypto.RSA.RSAError:
+        return False
+
+
+def make_ss_cert(key_str, domains, not_before=None,
+                 validity=(7 * 24 * 60 * 60)):
     """Returns new self-signed cert in PEM form.
 
     Uses key_str and contains all domains.
+
     """
     assert domains, "Must provide one or more hostnames for the CSR."
 
@@ -142,11 +194,11 @@ def make_ss_cert(key_str, domains):
     cert.set_serial_number(1337)
     cert.set_version(2)
 
-    current_ts = long(time.time())
+    current_ts = long(time.time() if not_before is None else not_before)
     current = M2Crypto.ASN1.ASN1_UTCTIME()
     current.set_time(current_ts)
     expire = M2Crypto.ASN1.ASN1_UTCTIME()
-    expire.set_time((7 * 24 * 60 * 60) + current_ts)
+    expire.set_time(current_ts + validity)
     cert.set_not_before(current)
     cert.set_not_after(expire)
 
@@ -158,11 +210,13 @@ def make_ss_cert(key_str, domains):
     subject.CN = domains[0]
     cert.set_issuer(cert.get_subject())
 
-    cert.add_ext(M2Crypto.X509.new_extension('basicConstraints', 'CA:FALSE'))
-    # cert.add_ext(M2Crypto.X509.new_extension(
-    #    'extendedKeyUsage', 'TLS Web Server Authentication'))
-    cert.add_ext(M2Crypto.X509.new_extension(
-        'subjectAltName', ", ".join(["DNS:%s" % d for d in domains])))
+    if len(domains) > 1:
+        cert.add_ext(M2Crypto.X509.new_extension(
+            'basicConstraints', 'CA:FALSE'))
+        # cert.add_ext(M2Crypto.X509.new_extension(
+        #    'extendedKeyUsage', 'TLS Web Server Authentication'))
+        cert.add_ext(M2Crypto.X509.new_extension(
+            'subjectAltName', ", ".join(["DNS:%s" % d for d in domains])))
 
     cert.sign(pubkey, 'sha256')
     assert cert.verify(pubkey)
@@ -200,75 +254,6 @@ def get_cert_info(filename):
     }
 
 
-# WARNING: the csr and private key file are possible attack vectors for TOCTOU
-# We should either...
-# A. Do more checks to verify that the CSR is trusted/valid
-# B. Audit the parsing code for vulnerabilities
-
-def valid_csr(csr):
-    """Validate CSR.
-
-    Check if `csr` is a valid CSR for the given domains.
-
-    :param str csr: CSR file contents
-
-    :returns: Validity of CSR.
-    :rtype: bool
-
-    """
-    try:
-        csr_obj = M2Crypto.X509.load_request_string(csr)
-        return bool(csr_obj.verify(csr_obj.get_pubkey()))
-    except M2Crypto.X509.X509Error:
-        return False
-
-
-def csr_matches_names(csr, domains):
-    """Check if CSR contains the subject of one of the domains.
-
-    M2Crypto currently does not expose the OpenSSL interface to
-    also check the SAN extension. This is insufficient for full testing
-
-    :param str csr: CSR file contents
-
-    :param list domains: Domains the CSR should contain.
-
-    :returns: If the CSR subject contains one of the domains
-    :rtype: bool
-
-    """
-    try:
-        csr_obj = M2Crypto.X509.load_request_der_string(csr)
-        return csr_obj.get_subject().CN in domains
-    except M2Crypto.X509.X509Error:
-        return False
-
-
-def valid_privkey(privkey):
-    """Is valid RSA private key?
-
-    :param str privkey: Private key file contents
-
-    :returns: Validity of private key.
-    :rtype: bool
-
-    """
-    try:
-        return bool(M2Crypto.RSA.load_key_string(privkey).check_key())
-    except M2Crypto.RSA.RSAError:
-        return False
-
-
-def csr_matches_pubkey(csr, privkey):
-    """Does private key correspond to the subject public key in the CSR?
-
-    :param str csr: CSR file contents
-    :param str privkey: Private key file contents
-
-    :returns: Correspondence of private key to CSR subject public key.
-    :rtype: bool
-
-    """
-    csr_obj = M2Crypto.X509.load_request_string(csr)
-    privkey_obj = M2Crypto.RSA.load_key_string(privkey)
-    return csr_obj.get_pubkey().get_rsa().pub() == privkey_obj.pub()
+def b64_cert_to_pem(b64_der_cert):
+    return M2Crypto.X509.load_cert_der_string(
+        le_util.jose_b64decode(b64_der_cert)).as_pem()
diff --git a/letsencrypt/client/tests/acme_test.py b/letsencrypt/client/tests/acme_test.py
index df232c75a..808eefc1b 100644
--- a/letsencrypt/client/tests/acme_test.py
+++ b/letsencrypt/client/tests/acme_test.py
@@ -1,4 +1,5 @@
 """Tests for letsencrypt.client.acme."""
+import pkg_resources
 import unittest
 
 import jsonschema
@@ -58,15 +59,8 @@ class MessageFactoriesTest(unittest.TestCase):
     """Tests for ACME message factories from letsencrypt.client.acme."""
 
     def setUp(self):
-        self.privkey = """-----BEGIN RSA PRIVATE KEY-----
-MIIBOgIBAAJBAKx1c7RR7R/drnBSQ/zfx1vQLHUbFLh1AQQQ5R8DZUXd36efNK79
-vukFhN9HFoHZiUvOjm0c+pVE6K+EdE/twuUCAwEAAQJAMbrEnJCrQe8YqAbw1/Bn
-elAzIamndfE3U8bTavf9sgFpS4HL83rhd6PDbvx81ucaJAT/5x048fM/nFl4fzAc
-mQIhAOF/a9o3EIsDKEmUl+Z1OaOiUxDF3kqWSmALEsmvDhwXAiEAw8ljV5RO/rUp
-Zu2YMDFq3MKpyyMgBIJ8CxmGRc6gCmMCIGRQzkcmhfqBrhOFwkmozrqIBRIKJIjj
-8TRm2LXWZZ2DAiAqVO7PztdNpynugUy4jtbGKKjBrTSNBRGA7OHlUgm0dQIhALQq
-6oGU29Vxlvt3k0vmiRKU4AVfLyNXIGtcWcNG46h/
------END RSA PRIVATE KEY-----"""
+        self.privkey = pkg_resources.resource_string(
+            __name__, 'testdata/rsa256_key.pem')
         self.nonce = '\xec\xd6\xf2oYH\xeb\x13\xd5#q\xe0\xdd\xa2\x92\xa9'
         self.b64nonce = '7Nbyb1lI6xPVI3Hg3aKSqQ'
 
diff --git a/letsencrypt/client/tests/crypto_util_test.py b/letsencrypt/client/tests/crypto_util_test.py
new file mode 100644
index 000000000..e80988d83
--- /dev/null
+++ b/letsencrypt/client/tests/crypto_util_test.py
@@ -0,0 +1,178 @@
+"""Tests for letsencrypt.client.crypto_util."""
+import datetime
+import os
+import pkg_resources
+import unittest
+
+import M2Crypto
+
+
+RSA256_KEY = pkg_resources.resource_string(__name__, 'testdata/rsa256_key.pem')
+RSA512_KEY = pkg_resources.resource_string(__name__, 'testdata/rsa512_key.pem')
+
+
+class CreateSigTest(unittest.TestCase):
+    """Tests for letsencrypt.client.crypto_util.create_sig."""
+
+    def setUp(self):
+        self.nonce = '\xec\xd6\xf2oYH\xeb\x13\xd5#q\xe0\xdd\xa2\x92\xa9'
+        self.b64nonce = '7Nbyb1lI6xPVI3Hg3aKSqQ'
+        self.signature = {
+            'nonce': self.b64nonce,
+            'alg': 'RS256',
+            'jwk': {
+                'kty': 'RSA',
+                'e': 'AQAB',
+                'n': 'rHVztFHtH92ucFJD_N_HW9AsdRsUuHUBBBDlHwNlRd3fp5'
+                     '80rv2-6QWE30cWgdmJS86ObRz6lUTor4R0T-3C5Q',
+            },
+            'sig': 'SUPYKucUnhlTt8_sMxLiigOYdf_wlOLXPI-o7aRLTsOquVjDd6r'
+                   'AX9AFJHk-bCMQPJbSzXKjG6H1IWbvxjS2Ew',
+        }
+
+    def _call(self, *args, **kwargs):
+        from letsencrypt.client.crypto_util import create_sig
+        return create_sig(*args, **kwargs)
+
+    def test_it(self):
+        self.assertEqual(
+            self._call('message', RSA256_KEY, self.nonce), self.signature)
+
+    def test_random_nonce(self):
+        signature = self._call('message', RSA256_KEY)
+        signature.pop('sig')
+        signature.pop('nonce')
+        del self.signature['sig']
+        del self.signature['nonce']
+        self.assertEqual(signature, self.signature)
+
+
+class ValidCSRTest(unittest.TestCase):
+    """Tests for letsencrypt.client.crypto_util.valid_csr."""
+
+    def _call(self, csr):
+        from letsencrypt.client.crypto_util import valid_csr
+        return valid_csr(csr)
+
+    def _call_testdata(self, name):
+        return self._call(pkg_resources.resource_string(
+            __name__, os.path.join('testdata', name)))
+
+    def test_valid_pem_true(self):
+        self.assertTrue(self._call_testdata('csr.pem'))
+
+    def test_valid_pem_san_true(self):
+        self.assertTrue(self._call_testdata('csr-san.pem'))
+
+    def test_valid_der_false(self):
+        self.assertFalse(self._call_testdata('csr.der'))
+
+    def test_valid_der_san_false(self):
+        self.assertFalse(self._call_testdata('csr-san.der'))
+
+    def test_empty_false(self):
+        self.assertFalse(self._call(''))
+
+    def test_random_false(self):
+        self.assertFalse(self._call('foo bar'))
+
+
+class CSRMatchesPubkeyTest(unittest.TestCase):
+    """Tests for letsencrypt.client.crypto_util.csr_matches_pubkey."""
+
+    def _call_testdata(self, name, privkey):
+        from letsencrypt.client.crypto_util import csr_matches_pubkey
+        return csr_matches_pubkey(pkg_resources.resource_string(
+            __name__, os.path.join('testdata', name)), privkey)
+
+    def test_valid_true(self):
+        self.assertTrue(self._call_testdata('csr.pem', RSA256_KEY))
+
+    def test_invalid_false(self):
+        self.assertFalse(self._call_testdata('csr.pem', RSA512_KEY))
+
+
+class MakeKeyTest(unittest.TestCase):
+    """Tests for letsencrypt.client.crypto_util.make_key."""
+
+    def test_it(self):
+        from letsencrypt.client.crypto_util import make_key
+        M2Crypto.RSA.load_key_string(make_key(1024))
+
+
+class ValidPrivkeyTest(unittest.TestCase):
+    """Tests for letsencrypt.client.crypto_util.valid_privkey."""
+
+    def _call(self, privkey):
+        from letsencrypt.client.crypto_util import valid_privkey
+        return valid_privkey(privkey)
+
+    def test_valid_true(self):
+        self.assertTrue(self._call(RSA256_KEY))
+
+    def test_empty_false(self):
+        self.assertFalse(self._call(''))
+
+    def test_random_false(self):
+        self.assertFalse(self._call('foo bar'))
+
+
+class MakeSSCertTest(unittest.TestCase):
+    """Tests for letsencrypt.client.crypto_util.make_ss_cert."""
+
+    def test_it(self):
+        from letsencrypt.client.crypto_util import make_ss_cert
+        make_ss_cert(RSA256_KEY, ['example.com', 'www.example.com'])
+
+
+class GetCertInfoTest(unittest.TestCase):
+    """Tests for letsencrypt.client.crypto_util.get_cert_info."""
+
+    def setUp(self):
+        self.cert_info = {
+            'not_before': datetime.datetime(
+                2014, 12, 11, 22, 34, 45, tzinfo=M2Crypto.ASN1.UTC),
+            'not_after': datetime.datetime(
+                2014, 12, 18, 22, 34, 45, tzinfo=M2Crypto.ASN1.UTC),
+            'subject': 'C=US, ST=Michigan, L=Ann Arbor, O=University '
+                       'of Michigan and the EFF, CN=example.com',
+            'cn': 'example.com',
+            'issuer': 'C=US, ST=Michigan, L=Ann Arbor, O=University '
+                      'of Michigan and the EFF, CN=example.com',
+            'serial': 1337L,
+            'pub_key': 'RSA 512',
+        }
+
+    def _call(self, name):
+        from letsencrypt.client.crypto_util import get_cert_info
+        self.assertEqual(get_cert_info(pkg_resources.resource_filename(
+            __name__, os.path.join('testdata', name))), self.cert_info)
+
+    def test_single_domain(self):
+        self.cert_info.update({
+            'san': '',
+            'fingerprint': '9F8CE01450D288467C3326AC0457E351939C72E',
+        })
+        self._call('cert.pem')
+
+    def test_san(self):
+        self.cert_info.update({
+            'san': 'DNS:example.com, DNS:www.example.com',
+            'fingerprint': '62F7110431B8E8F55905DBE5592518F9634AC50A',
+        })
+        self._call('cert-san.pem')
+
+
+class B64CertToPEMTest(unittest.TestCase):
+    """Tests for letsencrypt.client.crypto_util.b64_cert_to_pem."""
+
+    def test_it(self):
+        from letsencrypt.client.crypto_util import b64_cert_to_pem
+        self.assertEqual(
+            b64_cert_to_pem(pkg_resources.resource_string(
+                __name__, 'testdata/cert.b64jose')),
+            pkg_resources.resource_string(__name__, 'testdata/cert.pem'))
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/letsencrypt/client/tests/testdata/cert-san.pem b/letsencrypt/client/tests/testdata/cert-san.pem
new file mode 100644
index 000000000..dcb835994
--- /dev/null
+++ b/letsencrypt/client/tests/testdata/cert-san.pem
@@ -0,0 +1,14 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/letsencrypt/client/tests/testdata/cert.b64jose b/letsencrypt/client/tests/testdata/cert.b64jose
new file mode 100644
index 000000000..fa1abdb9f
--- /dev/null
+++ b/letsencrypt/client/tests/testdata/cert.b64jose
@@ -0,0 +1 @@
+MIIB3jCCAYigAwIBAgICBTkwDQYJKoZIhvcNAQELBQAwdzELMAkGA1UEBhMCVVMxETAPBgNVBAgMCE1pY2hpZ2FuMRIwEAYDVQQHDAlBbm4gQXJib3IxKzApBgNVBAoMIlVuaXZlcnNpdHkgb2YgTWljaGlnYW4gYW5kIHRoZSBFRkYxFDASBgNVBAMMC2V4YW1wbGUuY29tMB4XDTE0MTIxMTIyMzQ0NVoXDTE0MTIxODIyMzQ0NVowdzELMAkGA1UEBhMCVVMxETAPBgNVBAgMCE1pY2hpZ2FuMRIwEAYDVQQHDAlBbm4gQXJib3IxKzApBgNVBAoMIlVuaXZlcnNpdHkgb2YgTWljaGlnYW4gYW5kIHRoZSBFRkYxFDASBgNVBAMMC2V4YW1wbGUuY29tMFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAKx1c7RR7R_drnBSQ_zfx1vQLHUbFLh1AQQQ5R8DZUXd36efNK79vukFhN9HFoHZiUvOjm0c-pVE6K-EdE_twuUCAwEAATANBgkqhkiG9w0BAQsFAANBAC24z0IdwIVKSlntksllvr6zJepBH5fMndfk3XJp10jT6VE-14KNtjh02a56GoraAvJAT5_H67E8GvJ_ocNnB_o
\ No newline at end of file
diff --git a/letsencrypt/client/tests/testdata/cert.pem b/letsencrypt/client/tests/testdata/cert.pem
new file mode 100644
index 000000000..96c55cbf4
--- /dev/null
+++ b/letsencrypt/client/tests/testdata/cert.pem
@@ -0,0 +1,13 @@
+-----BEGIN CERTIFICATE-----
+MIIB3jCCAYigAwIBAgICBTkwDQYJKoZIhvcNAQELBQAwdzELMAkGA1UEBhMCVVMx
+ETAPBgNVBAgMCE1pY2hpZ2FuMRIwEAYDVQQHDAlBbm4gQXJib3IxKzApBgNVBAoM
+IlVuaXZlcnNpdHkgb2YgTWljaGlnYW4gYW5kIHRoZSBFRkYxFDASBgNVBAMMC2V4
+YW1wbGUuY29tMB4XDTE0MTIxMTIyMzQ0NVoXDTE0MTIxODIyMzQ0NVowdzELMAkG
+A1UEBhMCVVMxETAPBgNVBAgMCE1pY2hpZ2FuMRIwEAYDVQQHDAlBbm4gQXJib3Ix
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+vr6zJepBH5fMndfk3XJp10jT6VE+14KNtjh02a56GoraAvJAT5/H67E8GvJ/ocNn
+B/o=
+-----END CERTIFICATE-----
diff --git a/letsencrypt/client/tests/testdata/csr-san.der b/letsencrypt/client/tests/testdata/csr-san.der
new file mode 100644
index 000000000..68fd38723
Binary files /dev/null and b/letsencrypt/client/tests/testdata/csr-san.der differ
diff --git a/letsencrypt/client/tests/testdata/csr-san.pem b/letsencrypt/client/tests/testdata/csr-san.pem
new file mode 100644
index 000000000..a7128e35c
--- /dev/null
+++ b/letsencrypt/client/tests/testdata/csr-san.pem
@@ -0,0 +1,10 @@
+-----BEGIN CERTIFICATE REQUEST-----
+MIIBbjCCARgCAQAweTELMAkGA1UEBhMCVVMxETAPBgNVBAgMCE1pY2hpZ2FuMRIw
+EAYDVQQHDAlBbm4gQXJib3IxDDAKBgNVBAoMA0VGRjEfMB0GA1UECwwWVW5pdmVy
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+tmReY6X1N4cs38D9VSow+VMRu2LWkKvzS7RUFSaTaeQz1A==
+-----END CERTIFICATE REQUEST-----
diff --git a/letsencrypt/client/tests/testdata/csr.der b/letsencrypt/client/tests/testdata/csr.der
new file mode 100644
index 000000000..22900a612
Binary files /dev/null and b/letsencrypt/client/tests/testdata/csr.der differ
diff --git a/letsencrypt/client/tests/testdata/csr.pem b/letsencrypt/client/tests/testdata/csr.pem
new file mode 100644
index 000000000..b6818e39d
--- /dev/null
+++ b/letsencrypt/client/tests/testdata/csr.pem
@@ -0,0 +1,10 @@
+-----BEGIN CERTIFICATE REQUEST-----
+MIIBXTCCAQcCAQAweTELMAkGA1UEBhMCVVMxETAPBgNVBAgMCE1pY2hpZ2FuMRIw
+EAYDVQQHDAlBbm4gQXJib3IxDDAKBgNVBAoMA0VGRjEfMB0GA1UECwwWVW5pdmVy
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+n9XBE1N9W6HCIEut2d8wACg=
+-----END CERTIFICATE REQUEST-----
diff --git a/letsencrypt/client/tests/testdata/rsa256_key.pem b/letsencrypt/client/tests/testdata/rsa256_key.pem
new file mode 100644
index 000000000..610c8d315
--- /dev/null
+++ b/letsencrypt/client/tests/testdata/rsa256_key.pem
@@ -0,0 +1,9 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIBOgIBAAJBAKx1c7RR7R/drnBSQ/zfx1vQLHUbFLh1AQQQ5R8DZUXd36efNK79
+vukFhN9HFoHZiUvOjm0c+pVE6K+EdE/twuUCAwEAAQJAMbrEnJCrQe8YqAbw1/Bn
+elAzIamndfE3U8bTavf9sgFpS4HL83rhd6PDbvx81ucaJAT/5x048fM/nFl4fzAc
+mQIhAOF/a9o3EIsDKEmUl+Z1OaOiUxDF3kqWSmALEsmvDhwXAiEAw8ljV5RO/rUp
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+6oGU29Vxlvt3k0vmiRKU4AVfLyNXIGtcWcNG46h/
+-----END RSA PRIVATE KEY-----
diff --git a/letsencrypt/client/tests/testdata/rsa512_key.pem b/letsencrypt/client/tests/testdata/rsa512_key.pem
new file mode 100644
index 000000000..709b6d8e3
--- /dev/null
+++ b/letsencrypt/client/tests/testdata/rsa512_key.pem
@@ -0,0 +1,9 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIBOwIBAAJBAPS2EXFRNza/qpXnnBHF/CcFQ543htV+7nLAmrLrmTNHtPXJmLlM
+8SJDIzv/ceAFXL110VzxFfi81lpH5E5c0TMCAwEAAQJBALmppYQ/JVARjWBcsEm/
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+J4dGZs+hkRySq/IOeeRJlNK1Pq64nToXAiBZ7+te1100YSd5KT051SRB94zO13EG
+SZESFduVW8rz3QIgK+tLiqg6TYYRQUi/PUTAM4GuKNuZw828RGiPyqHLywUCIQCd
+pkZrNphL/y0D7HSbPIfZzD90M2V8tUjlK0BTqk1bHA==
+-----END RSA PRIVATE KEY-----