Sort of. A one time pad does not destroy data, but a hash will. Wikipedia has a good example: https://en.wikipedia.org/wiki/One-time_pad https://en.wikipedia.o

Sort of. A one time pad does not destroy data, but a hash will. Wikipedia has a good example: https://en.wikipedia.org/wiki/One-time_pad https://en.wikipedia.org/wiki/One-time_pad In their example, "HELLO" is the plain text, "XMCKL" is the key, and the ciphertext is "EQNVZ". However, with a one time pad, an equally plausible plain text is "later" with the key "TQURI". Thus, without anymore data, it is simply impossible to know what the original message is.