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https://issues.apache.org/jira/browse/SHIRO-730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17012194#comment-17012194
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Peter Rebholz commented on SHIRO-730:
-------------------------------------
Not sure if this the right protocol, but should this change be considered a
breaking change? Or is AesCipherService considered an internal API?
If someone uses this service to encrypt and decrypt values that are persisted
then existing values will be unreadable (when using the defaults) after
upgrading to Shiro 1.4.2. I'm attaching a small program
([^ShiroUpgradeTest.java]) that demonstrates this and produces the following
output:
$ SHIRO_VERSION=1.4.1
$ java -cp
shiro-core-$SHIRO_VERSION.jar:shiro-crypto-cipher-$SHIRO_VERSION.jar:slf4j-api-1.7.22.jar:slf4j-nop-1.7.22.jar:.
ShiroUpgradeTest encrypt
$ java -cp
shiro-core-$SHIRO_VERSION.jar:shiro-crypto-cipher-$SHIRO_VERSION.jar:slf4j-api-1.7.22.jar:slf4j-nop-1.7.22.jar:.
ShiroUpgradeTest decrypt
Plain Text: Hello World
$ SHIRO_VERSION=1.4.2
$ java -cp
shiro-core-$SHIRO_VERSION.jar:shiro-crypto-cipher-$SHIRO_VERSION.jar:slf4j-api-1.7.22.jar:slf4j-nop-1.7.22.jar:.
ShiroUpgradeTest decrypt
Exception in thread "main" org.apache.shiro.crypto.CryptoException: Unable to
execute 'doFinal' with cipher instance [javax.crypto.Cipher@5a2e4553].
at org.apache.shiro.crypto.JcaCipherService.crypt(JcaCipherService.java:462)
at org.apache.shiro.crypto.JcaCipherService.crypt(JcaCipherService.java:445)
at org.apache.shiro.crypto.JcaCipherService.decrypt(JcaCipherService.java:390)
at org.apache.shiro.crypto.JcaCipherService.decrypt(JcaCipherService.java:382)
at ShiroUpgradeTest.decrypt(ShiroUpgradeTest.java:49)
at ShiroUpgradeTest.main(ShiroUpgradeTest.java:63)
Caused by: javax.crypto.AEADBadTagException: Tag mismatch!
at
com.sun.crypto.provider.GaloisCounterMode.decryptFinal(GaloisCounterMode.java:592)
at com.sun.crypto.provider.CipherCore.finalNoPadding(CipherCore.java:1116)
at com.sun.crypto.provider.CipherCore.fillOutputBuffer(CipherCore.java:1053)
at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:853)
at com.sun.crypto.provider.AESCipher.engineDoFinal(AESCipher.java:446)
at javax.crypto.Cipher.doFinal(Cipher.java:2164)
at org.apache.shiro.crypto.JcaCipherService.crypt(JcaCipherService.java:459)
... 5 more
> Updates the default Cipher mode to GCM in AesCipherService
> ----------------------------------------------------------
>
> Key: SHIRO-730
> URL: https://issues.apache.org/jira/browse/SHIRO-730
> Project: Shiro
> Issue Type: Improvement
> Reporter: Francois Papon
> Priority: Major
> Fix For: 1.4.2, 1.5.0
>
> Attachments: ShiroUpgradeTest.java
>
>
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