This Standard specifies key establishment schemes using public-key cryptography based on the integer factorization problem. Both key agreement and key transport schemes are specified. The schemes may be used by two parties to transport or agree on shared keying material (see Note 1). The keying material may be used to provide other cryptographic services that are outside the scope of this Standard@ e.g. data confidentiality@ data integrity@ and symmetric-key-based key establishment. The key pair generators may be used in other Standards based on the integer factorization problem.