While using SecKeyDecrypt function in iOS to decrypt some data I got error -9809. That is with a "-" in front.
So I went to google and searched for "SecKeyDecrypt error -9809". None of the pages said anything about "-9809".
I tried "SecKeyDecrypt error 9809" and I got some good answers.
The reason is that "-" means show the pages that do not contain the value. Exactly the opposite of what I wanted.
The solution is to include the value with "-" among quotation marks like this:
SecKeyDecrypt error "-9809"
Here is the description of the error in case you reached here using google:
While replicating the code here, the code returned an error "-9809" for
status = SecKeyDecrypt( privateKey,
The reason is that there is a typo on the page a little bit above at the line:
NSData *encryptedData = [NSData dataWithBytes:cipherBuffer length:dataLength];
It should be:
NSData *encryptedData = [NSData dataWithBytes:cipherBuffer length:cipherBufferSize];
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