Error: Invalid key length

[carmensancheez]

I created a new entry to my collection and added the field 'password' encrypted with mongooseFieldEncryption. Now when I try to decrypt that field, I have the following error: (node:7362) UnhandledPromiseRejectionWarning: Error: Invalid key length at Decipheriv.createCipherBase (internal/crypto/cipher.js:103:19) at Decipheriv.createCipherWithIV (internal/crypto/cipher.js:121:20) at new Decipheriv (internal/crypto/cipher.js:262:22) at Object.createDecipheriv (crypto.js:131:10)

PTAL! I need to decrypt the field ASAP

[wheresvic]

Hi @carmensancheez ,

Sorry to hear that you have this issue, could you please provide the code that you used?

Note that this error likely occurs when the secret you provided is not correct / empty.

[amitistyping]

@carmensancheez I resolved this by making secret length 32 characters.

But then I ran into this error - error:06065064:digital envelope routines:EVP_DecryptFinal_ex:bad decrypt.

I am trying to decrypt data like this - fieldEncryption.decrypt(messageObj.messageData.receiver, 'my secret key)

@wheresvic Can you suggest some solution for this?

[amitistyping]

@wheresvic What I want to do is get decrypted data after I have created a document.

[igisav]

Same pain as @lazzyn - first one error and with 32 byte secret you get another...

OpenSSL: LibreSSL 2.8.3 Mac Catalina 10.16.6

@plugin(fieldEncryption, {
  fields: ['password'],
  secret:  'my secret',
})
export class MyEndpoint extends BaseModel<MyEndpoint> {
  @prop()
  password: string;
  .....
}

...

const decryptedPassword = decrypt(myEndpoint.password, 'my secret');```

[wheresvic]

So to be fair decrypt is an internal function, ideally you want to call the static function decryptFieldsSync and get the decrypted object. See this test for example usage: https://github.com/wheresvic/mongoose-field-encryption/blob/master/test/test-statics.js

Please let me know if this does not work, thanks!

[igisav]

Thanks a lot, @wheresvic! decryptFieldsSync works on created Document and decrypt was wrong method for me.

additional question: Are there types for Typescript for this library?

[wheresvic]

Hi @igisav good to hear that you were able to resolve your issue.

Unfortunately, there are no typescript types for this library - feel free to file and issue and I'll see if I can make some.

Cheers!