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BuzzLightyear2
Inspiring
November 22, 2016
Answered

UNhash SHA String

  • November 22, 2016
  • 1 reply
  • 967 views

Just a quick one. Is it possible to unhash / decrypt an SHA hashed field and if so how?

This topic has been closed for replies.
Correct answer WolfShade

If the value has been ENCRYPTED and the key known, it can be decrypted.  Obviously.

If the value has been HASHED, then that's another tale.  Hashing is supposed to be irreversible.  However, I believe someone, somewhere, has broken the SHA-0 hashing (just a rumour I heard.)  SHA-1, according to Wikipedia, has theoretical attacks.  SHA-2 and SHA-3 are, to my knowledge, not breakable with current technology.

HTH,

^_^

1 reply

WolfShade
WolfShadeCorrect answer
Legend
November 22, 2016

If the value has been ENCRYPTED and the key known, it can be decrypted.  Obviously.

If the value has been HASHED, then that's another tale.  Hashing is supposed to be irreversible.  However, I believe someone, somewhere, has broken the SHA-0 hashing (just a rumour I heard.)  SHA-1, according to Wikipedia, has theoretical attacks.  SHA-2 and SHA-3 are, to my knowledge, not breakable with current technology.

HTH,

^_^

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