You can use functions from pgcrypto library to encrypt / decrypt columns.

可以使用 pgcrypto 库中的函数对列进行加密/解密。

youdao

WEP combines a 40-bit or a 104-bit key with a random 24-bit initialization vector to encrypt/decrypt data.

WEP 将 40 比特或 104 比特密钥与随机的 24 比特初始向量组合用以加解密数据。

youdao

XML encryption and digital signatures rely on Public Key Infrastructure (PKI) to help encrypt, decrypt, sign, and verify various documents.

xml加密和数字签名依赖于公共密钥基础设施(Public Key Infrastructure, PKI)来帮助加密(encrypt)、解密(decrypt)、签名(sign)和验证(verify)各种文档。

youdao

As a safety measure, corporations want to have a way to decrypt data that their employees encrypt, Jones notes.

CNN: Technology - Security flaw discovered in Network Associates PGP software