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Asymmetric Encryption (AE)

Asymmetric Encryption

The reason why any voter can encrypt their ballot, but only the electoral board can decrypt it.

To encrypt and decrypt a message, a cryptographic key is needed. This key can take many shapes, but it is most commonly a long string of numbers and letters, like a password that is impossible to randomly guess. An encryption process that uses the same key to encrypt and decrypt messages is known as symmetric encryption, whereas a process that uses one key to encrypt messages and a different key to decrypt them is known as asymmetric encryption. 

In order for every voter to encrypt their own ballot and for the electoral board to decrypt every voters’ ballot, two unique keys are needed. Therefore, asymmetric encryption is necessary in any online election. When voting online, a public encryption key is made available to all voters. This key can only be used to encrypt ballots and is automatically applied when a voter hits the “CAST” button on their device. When the election is over, the electoral board uses their private decryption key, known only to them, to begin tallying the votes. Due to the use of this key pair, any voter can encrypt their ballot, but only the electoral board can decrypt them. 

Benefits

Public Key 

Every voter can encrypt their ballot with a public key.

Asymmetric Encryption

Only the Electoral Board can decrypt ballots with a unique private key.

Integrity
Auditability
Authentication
Infrastructure
Learn More About Online Voting

AE

Benefits

Public Key 

Every voter can encrypt their ballot with a public key.

Asymmetric Encryption

Only the Electoral Board can decrypt ballots with a unique private key.

Learn More About Online Voting

Scytl is the global leader in secure online voting and election management solutions.

  • 300,000+ online elections
  • 19 out of 21 country governments worldwide
  • 20 years of experience
  • 41 international patents in security
  • 30+ scientific publications

Scytl is the global leader in secure online voting and election management solutions.

  • 300,000+ online elections
  • 19 out of 21 country governments worldwide
  • 20 years of experience
  • 41 international patents in security
  • 30+ scientific publications