大约有 453 项符合查询结果(耗时:0.0180秒) [XML]

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Encrypt & Decrypt using PyCrypto AES 256

... base64 import hashlib from Crypto import Random from Crypto.Cipher import AES class AESCipher(object): def __init__(self, key): self.bs = AES.block_size self.key = hashlib.sha256(key.encode()).digest() def encrypt(self, raw): raw = self._pad(raw) iv = Ran...
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程序员之网络安全系列(三):数据加密之对称加密算法 - 更多技术 - 清泛网...

...一块数据用三个不同的密钥进行三次加密,强度更高。 AES(Advanced Encryption Standard):高级加密标准,是下一代的加密算法标准,速度快,安全级别高; RC4,也是为 RSA Data Security, Inc. 开发的密码系统的商标名称。 传统的DES...
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How to add texture to fill colors in ggplot2

...friendly. So mabe something like this will work for you? ggplot(diamonds, aes(x=cut, y=price, group=cut))+ geom_boxplot(aes(fill=cut))+scale_fill_brewer(palette="OrRd") in this case OrRd is a palette found on the colorbrewer webpage: http://colorbrewer2.org/ Photocopy Friendly: This indicates...
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Android encryption / decryption using AES [closed]

... a good example of how to encrypt and decrypt image and other files with AES on Android? 11 Answers ...
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AES vs Blowfish for file encryption

... Probably AES. Blowfish was the direct predecessor to Twofish. Twofish was Bruce Schneier's entry into the competition that produced AES. It was judged as inferior to an entry named Rijndael, which was what became AES. Interesting as...
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App Inventor 2 Encrypt.Security 安全性扩展:MD5哈希,SHA1和SHA256哈希...

...tor 2 Encrypt.Security 安全性扩展:MD5哈希,SHA1和SHA256哈希,AES加密/解密,RSA加密/解密,BASE64编码/解码 Encrypt.Security 安全性扩展 权限 事件 OnErrorOccured OnRsaKeyPairGenrated 方法 ...
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Comparison of DES, Triple DES, AES, blowfish encryption for data

... Use AES. In more details: DES is the old "data encryption standard" from the seventies. Its key size is too short for proper security (56 effective bits; this can be brute-forced, as has been demonstrated more than ten years a...
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Scatterplot with too many points

... in ggplot2: df <- data.frame(x = rnorm(5000),y=rnorm(5000)) ggplot(df,aes(x=x,y=y)) + geom_point(alpha = 0.3) Another convenient way to deal with this is (and probably more appropriate for the number of points you have) is hexagonal binning: ggplot(df,aes(x=x,y=y)) + stat_binhex() And ...
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Initial bytes incorrect after Java AES/CBC decryption

... SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes("UTF-8"), "AES"); Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING"); cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv); byte[] encrypted = cipher.doFinal(value.getBytes()); System....
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Show percent % instead of counts in charts of categorical variables

...ments above: require(ggplot2) require(scales) p <- ggplot(mydataf, aes(x = foo)) + geom_bar(aes(y = (..count..)/sum(..count..))) + ## version 3.0.0 scale_y_continuous(labels=percent) Here's a reproducible example using mtcars: ggplot(mtcars, aes(x = factor(hp))...