crypt

实例

在本实例中，我们将测试不同的算法：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token comment">// 两字符 salt</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token constant">CRYPT_STD_DES</span> <span class="token operator">==</span> <span class="token number">1</span><span class="token punctuation">)</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"Standard DES: "</span><span class="token operator">.</span><span class="token function">crypt</span><span class="token punctuation">(</span><span class="token string single-quoted-string">'something'</span><span class="token punctuation">,</span><span class="token string single-quoted-string">'st'</span><span class="token punctuation">)</span><span class="token operator">.</span><span class="token string double-quoted-string">"\n<br>"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token keyword">else</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"Standard DES not supported.\n<br>"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">// 4 字符 salt</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token constant">CRYPT_EXT_DES</span> <span class="token operator">==</span> <span class="token number">1</span><span class="token punctuation">)</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"Extended DES: "</span><span class="token operator">.</span><span class="token function">crypt</span><span class="token punctuation">(</span><span class="token string single-quoted-string">'something'</span><span class="token punctuation">,</span><span class="token string single-quoted-string">'_S4..some'</span><span class="token punctuation">)</span><span class="token operator">.</span><span class="token string double-quoted-string">"\n<br>"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token keyword">else</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"Extended DES not supported.\n<br>"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">//以 $1$ 开始的 12 字符</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token constant">CRYPT_MD5</span> <span class="token operator">==</span> <span class="token number">1</span><span class="token punctuation">)</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"MD5: "</span><span class="token operator">.</span><span class="token function">crypt</span><span class="token punctuation">(</span><span class="token string single-quoted-string">'something'</span><span class="token punctuation">,</span><span class="token string single-quoted-string">'$1$somethin$'</span><span class="token punctuation">)</span><span class="token operator">.</span><span class="token string double-quoted-string">"\n<br>"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token keyword">else</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"MD5 not supported.\n<br>"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">// 以 $2a$ 开始的 Salt。双数字的 cost 参数：09. 22 字符</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token constant">CRYPT_BLOWFISH</span> <span class="token operator">==</span> <span class="token number">1</span><span class="token punctuation">)</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"Blowfish: "</span><span class="token operator">.</span><span class="token function">crypt</span><span class="token punctuation">(</span><span class="token string single-quoted-string">'something'</span><span class="token punctuation">,</span><span class="token string single-quoted-string">'$2a$09$anexamplestringforsalt$'</span><span class="token punctuation">)</span><span class="token operator">.</span><span class="token string double-quoted-string">"\n<br>"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token keyword">else</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"Blowfish DES not supported.\n<br>"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">// 以 $5$ 开始的 16 字符 salt。周长的默认数是 5000。</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token constant">CRYPT_SHA256</span> <span class="token operator">==</span> <span class="token number">1</span><span class="token punctuation">)</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"SHA-256: "</span><span class="token operator">.</span><span class="token function">crypt</span><span class="token punctuation">(</span><span class="token string single-quoted-string">'something'</span><span class="token punctuation">,</span><span class="token string single-quoted-string">'$5$rounds=5000$anexamplestringforsalt$'</span><span class="token punctuation">)</span><span class="token operator">.</span><span class="token string double-quoted-string">"\n<br>"</span><span class="token punctuation">;</span> <span class="token punctuation">}</span>
<span class="token keyword">else</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"SHA-256 not supported.\n<br>"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">// 以 $5$ 开始的 16 字符 salt。周长的默认数是 5000。</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token constant">CRYPT_SHA512</span> <span class="token operator">==</span> <span class="token number">1</span><span class="token punctuation">)</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"SHA-512: "</span><span class="token operator">.</span><span class="token function">crypt</span><span class="token punctuation">(</span><span class="token string single-quoted-string">'something'</span><span class="token punctuation">,</span><span class="token string single-quoted-string">'$6$rounds=5000$anexamplestringforsalt$'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token keyword">else</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"SHA-512 not supported."</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token delimiter important">?></span></span>

上面的代码的输出（取决于操作系统）：

Standard DES: stqAdD7zlbByI
Extended DES: _S4..someQXidlBpTUu6
MD5: $1$somethin$4NZKrUlY6r7K7.rdEOZ0w.
Blowfish: $2a$09$anexamplestringforsaleLouKejcjRlExmf1671qw3Khl49R3dfu
SHA-256: $5$rounds=5000$anexamplestringf$KIrctqsxo2wrPg5Ag/hs4jTi4PmoNKQUGWFXlVy9vu9
SHA-512: $6$rounds=5000$anexamplestringf$Oo0skOAdUFXkQxJpwzO05wgRHG0dhuaPBaOU/
oNbGpCEKlf/7oVM5wn6AN0w2vwUgA0O24oLzGQpp1XKI6LLQ0.