1 files changed, 13 insertions, 0 deletions
diff --git a/chromium/third_party/libjingle/source/talk/base/messagedigest.cc b/chromium/third_party/libjingle/source/talk/base/messagedigest.cc
index d91d0674b5f..975991db7c0 100644
--- a/chromium/third_party/libjingle/source/talk/base/messagedigest.cc
+++ b/chromium/third_party/libjingle/source/talk/base/messagedigest.cc
@@ -70,6 +70,19 @@ MessageDigest* MessageDigestFactory::Create(const std::string& alg) {
 #endif
 }
 
+bool IsFips180DigestAlgorithm(const std::string& alg) {
+  // These are the FIPS 180 algorithms.  According to RFC 4572 Section 5,
+  // "Self-signed certificates (for which legacy certificates are not a
+  // consideration) MUST use one of the FIPS 180 algorithms (SHA-1,
+  // SHA-224, SHA-256, SHA-384, or SHA-512) as their signature algorithm,
+  // and thus also MUST use it to calculate certificate fingerprints."
+  return alg == DIGEST_SHA_1 ||
+         alg == DIGEST_SHA_224 ||
+         alg == DIGEST_SHA_256 ||
+         alg == DIGEST_SHA_384 ||
+         alg == DIGEST_SHA_512;
+}
+
 size_t ComputeDigest(MessageDigest* digest, const void* input, size_t in_len,
                      void* output, size_t out_len) {
   digest->Update(input, in_len);