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Bindings to OpenSSL libssl and libcrypto, plus custom SSH pubkey
parsers. Supports RSA, DSA and NIST curves P-256, P-384 and P-521.
Cryptographic signatures can either be created and verified manually
or via x509 certificates. AES block cipher is used in CBC mode for
symmetric encryption; RSA for asymmetric (public key) encryption.
High-level envelope functions combine RSA and AES for encrypting
arbitrary sized data. Other utilities include key generators, hash
functions (md5, sha1, sha256, etc), base64 encoder, a secure random
number generator, and 'bignum' math methods for manually performing
crypto calculations on large multibyte integers.
WWW: https://cran.r-project.org/web/packages/openssl/
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