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A tale of two elliptic curves Posted on 21 August 2018 by John A few days ago I blogged about the elliptic curve secp256k1 and its use in Bitcoin. Thi 阅读全文
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https://wenku.baidu.com/view/93afe41910a6f524ccbf8542.html https://blog.csdn.net/hahasusu/article/details/88244155 阅读全文
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// Package subtle implements functions that are often useful in cryptographic// code but require careful thought to use correctly.package subtle// Con 阅读全文
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static inline uint32_t rotl(uint32_t a, uint8_t n){ return (a << n) | (a >> (32 - n));}static inline uint32_t rotr(uint32_t a, uint8_t n){ return (a > 阅读全文
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0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 0 3 2 5 4 7 6 9 8 11 10 13 12 15 14 2 3 0 1 6 7 4 5 10 11 8 9 14 15 12 13 3 2 1 0 7 6 5 4 11 10 9 8 15 14 13 1 阅读全文
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TLS1.3和TLS1.2的区别1、密钥协商机制改变，TLS1.3借助扩展进行密钥交换，TLS1.3只需要三次握手交互，TLS1.2则需要四次握手。首先看TLS1.2，它通过KeyExchange进行密钥协商，即ServerKeyExchange和ClientKeyExchange，那么密钥交换本身 阅读全文
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Go versus C++ g++ fastest programs vs C# .NET Core vs C++ vs Java vs Python vs Rust Always look at the source code. These are only the fastest program 阅读全文
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向上取整, 运算称为 Ceiling，用数学符号 ⌈⌉ （上有起止，开口向下）表示,。向下取整, 运算称为 Floor，用数学符号 ⌊⌋ （下有起止，开口向上）表示。注意，向上取整和向下取整是针对有浮点数而言的; 若整数向上取整和向下取整， 都是整数本身。 四舍五入：更接近自己的整数； 把小数点后面 阅读全文