To meet this challenge, a variety of cryptographic techniques have been proposed.
为了迎接这样的挑战，提出了各种各样的加密技术。
In order to use cryptographic techniques to avoid the lack of data protection, this paper proposes a new watermark algorithm based on block statistics.
针对密码技术在数据保护方面的不足，提出一种新的数字水印算法——基于分块统计的水印嵌入算法。
SSL protocol USES symmetric encryption, asymmetric encryption, message digest, digital signature, digital certificate and other cryptographic techniques.
SSL协议采用了对称加密、非对称加密、信息摘要、数字签名、数字证书等密码学技术。
Stacking all or part of these transparencies will allow visual recovery of the secret image with no special cryptographic computation, unlike almost any other cryptographic techniques.
解密时只需将全部或若干个分存图片叠加，依靠人眼就可以直接识别出密图，不需要大量复杂的密码学运算。
Stacking all or part of these transparencies will allow visual recovery of the secret image with no special cryptographic computation, unlike almost any other cryptographic techniques.
解密时只需将全部或若干个分存图片叠加，依靠人眼就可以直接识别出密图，不需要大量复杂的密码学运算。
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