Encryption system that uses a public-private key pair for encryption and/or digital signature.
Sources:
NIST SP 800-12 Rev. 1
under Public Key Cryptography
from
CNSSI 4009
Cryptography that uses separate keys for encryption and decryption; also known as asymmetric cryptography.
Sources:
NIST SP 1800-16B
under Public Key Cryptography
NIST SP 1800-16C
under Public Key Cryptography
NIST SP 1800-16D
under Public Key Cryptography