[Nitro] Two-way cryptographic method

[George Moschovitis]

Dear devs,

a slightly off topic question:

can anyone suggest a two-way cryptographics function with a robust ruby
implementation? I to do something like this:

e = XXX.encrypt("original string", "thekey")
b = XXX.decrypt(e,  "thekey") # b == "original string"

the function may be asymmetric, ie use different encryption/decryption keys.

thanks in advance for any suggestions.

-g.

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