This shows the Interoperability Matrix for OpenSSL Crypto Driver and NSS Crypto Driver.
NOTE: This documentation is taken from include/apr_crypto.h in apr-util v1.5.3′s source code.
Thanks to Gregg for this information.
http://apachehaus.com/forum/index.php?topic=626
/** * Symmetric Key types understood by the library. * * NOTE: It is expected that this list will grow over time. * * Interoperability Matrix: * * The matrix is based on the testcrypto.c unit test, which attempts to * test whether a simple encrypt/decrypt will succeed, as well as testing * whether an encrypted string by one library can be decrypted by the * others. * * Some libraries will successfully encrypt and decrypt their own data, * but won't decrypt data from another library. It is hoped that over * time these anomalies will be found and fixed, but until then it is * recommended that ciphers are chosen that interoperate across platform. * * An X below means the test passes, it does not necessarily mean that * encryption performed is correct or secure. Applications should stick * to ciphers that pass the interoperablity tests on the right hand side * of the table. * * Aligned data is data whose length is a multiple of the block size for * the chosen cipher. Padded data is data that is not aligned by block * size and must be padded by the crypto library. * * OpenSSL NSS Interop * Align Pad Align Pad Align Pad * 3DES_192/CBC X X X X X X * 3DES_192/ECB X X * AES_256/CBC X X X X X X * AES_256/ECB X X X X * AES_192/CBC X X X X * AES_192/ECB X X X * AES_128/CBC X X X X * AES_128/ECB X X X * * Conclusion: for padded data, use 3DES_192/CBC or AES_256/CBC. For * aligned data, use 3DES_192/CBC, AES_256/CBC or AES_256/ECB. */
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