Encryption Key Size...Pls Help!!

[Forri]

Hi All

I am using mcrypt to encypt a string using MCRYPT_TripleDES with a key:

0123456789abcdef23456789abcdef01456789abcdef0123

and an error stating

Warning: mcrypt_ecb(): Size of key is too large for this algorithm

What can i do...its not up to me to create the key!! how can i go about it!

Thanks
Nick

 

[sleipnir214]

You must use a shorter key or go to another encryption algorithm.

3DES has a key-length limit of 192 bits (assuming 8 bits per character, a maximum of 24 characters). You're handing it a 392-bit key.

Blowfish or RC4, for example, will take longer key lengths.

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