The federal bureau of investigation alleged the russian intelligence service known as the svr provided extensive training , including in foreign languages and the use of codes and ciphers , to the agents before dispatching them to the u. s.over the past decade .

美国联邦调查局（fbi）宣称，过去10年来，俄罗斯情报服务机构“svr”向这些特工提供全面的培训，包括外语和密码的使用，然后将其派往美国。

Research and development of new block ciphers .

新型区块加密算法研究与开发。

If so , such men might not be demons or moral ciphers , but rather addicts who are no longer entirely in control of themselves .

照这样看，这些男人或许也不是什么魔鬼或道德论亡之徒，他们只不过是一些欲罢不能的上瘾者。

Decoding these ciphers is the very key to their secret knowledge .

解读这些密码对他们的秘密知识是非常关键的。

Cryptography is the study of protecting information through the use of codes and ciphers .

密码学是一门研究如何通过使用代码和密码来保护信息的学科。