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Polish PasswordEncoderUtils do not leak length

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Fix possible / 0 if expected is empty String.

Issue gh-255
This commit is contained in:
Rob Winch
2016-10-24 12:50:11 -05:00
parent d3685d89c5
commit e62596f36d
2 changed files with 7 additions and 1 deletions
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2
core/src/main/java/org/springframework/security/authentication/encoding/PasswordEncoderUtils.java
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@@ -38,7 +38,7 @@ class PasswordEncoderUtils {
int result = expectedLength == actualLength ? 0 : 1;
for (int i = 0; i < actualLength; i++) {
byte expectedByte = expectedBytes == null ? 0 : expectedBytes[i % expectedLength];
byte expectedByte = expectedLength <= 0 ? 0 : expectedBytes[i % expectedLength];
byte actualByte = actualBytes[i % actualLength];
result |= expectedByte ^ actualByte;
}