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Merged
tianyizheng02 merged 4 commits into from
Sep 24, 2023
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Rewrite of base32.py algorithm #9068

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597581c
rewrite of base32.py
chriso345 Sep 20, 2023
52e28e5
changed maps to list comprehension
chriso345 Sep 20, 2023
e7d70e1
Merge branch 'TheAlgorithms:master' into base32
chriso345 Sep 23, 2023
89e2c4b
Apply suggestions from code review
chriso345 Sep 24, 2023
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51 changes: 27 additions & 24 deletions ciphers/base32.py
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Open in desktop
Original file line numberDiff line numberDiff line change
@@ -1,42 +1,45 @@
import base64
"""
Base32 encoding and decoding

https://en.wikipedia.org/wiki/Base32
"""
B32_CHARSET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"

def base32_encode(string: str) -> bytes:

def base32_encode(data: bytes) -> bytes:
"""
Encodes a given string to base32, returning a bytes-like object
>>> base32_encode("Hello World!")
>>> base32_encode(b"Hello World!")
b'JBSWY3DPEBLW64TMMQQQ===='
>>> base32_encode("123456")
>>> base32_encode(b"123456")
b'GEZDGNBVGY======'
>>> base32_encode("some long complex string")
>>> base32_encode(b"some long complex string")
b'ONXW2ZJANRXW4ZZAMNXW24DMMV4CA43UOJUW4ZY='
"""

# encoded the input (we need a bytes like object)
# then, b32encoded the bytes-like object
return base64.b32encode(string.encode("utf-8"))
binary_data = "".join(bin(ord(d))[2:].zfill(8) for d in data.decode("utf-8"))
binary_data = binary_data.ljust(5 * ((len(binary_data) // 5) + 1), "0")
b32_chunks = map("".join, zip(*[iter(binary_data)] * 5))
b32_result = "".join(B32_CHARSET[int(chunk, 2)] for chunk in b32_chunks)
return bytes(b32_result.ljust(8 * ((len(b32_result) // 8) + 1), "="), "utf-8")


def base32_decode(encoded_bytes: bytes) -> str:
def base32_decode(data: bytes) -> bytes:
"""
Decodes a given bytes-like object to a string, returning a string
>>> base32_decode(b'JBSWY3DPEBLW64TMMQQQ====')
'Hello World!'
b'Hello World!'
>>> base32_decode(b'GEZDGNBVGY======')
'123456'
b'123456'
>>> base32_decode(b'ONXW2ZJANRXW4ZZAMNXW24DMMV4CA43UOJUW4ZY=')
'some long complex string'
b'some long complex string'
"""

# decode the bytes from base32
# then, decode the bytes-like object to return as a string
return base64.b32decode(encoded_bytes).decode("utf-8")
binary_chunks = "".join(
bin(B32_CHARSET.index(_d))[2:].zfill(5)
for _d in data.decode("utf-8").strip("=")
)
binary_data = list(map("".join, zip(*[iter(binary_chunks)] * 8)))
return bytes("".join([chr(int(_d, 2)) for _d in binary_data]), "utf-8")


if __name__ == "__main__":
test = "Hello World!"
encoded = base32_encode(test)
print(encoded)
import doctest

decoded = base32_decode(encoded)
print(decoded)
doctest.testmod()
, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
Rewrite of base32.py algorithm by chriso345 · Pull Request #9068 · TheAlgorithms/Python · GitHub
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tianyizheng02
merged 4 commits into

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Sep 24, 2023
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Rewrite of base32.py algorithm
#9068
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597581c

rewrite of base32.py


chriso345 Sep 20, 2023
52e28e5

changed maps to list comprehension


chriso345 Sep 20, 2023
e7d70e1

Merge branch 'TheAlgorithms:master' into base32


chriso345 Sep 23, 2023
89e2c4b

Apply suggestions from code review


chriso345 Sep 24, 2023

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51 changes: 27 additions & 24 deletions
ciphers/base32.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,42 +1,45 @@
import base64
"""
Base32 encoding and decoding

https://en.wikipedia.org/wiki/Base32
"""
B32_CHARSET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"

def base32_encode(string: str) -> bytes:

def base32_encode(data: bytes) -> bytes:
 """
 Encodes a given string to base32, returning a bytes-like object
 >>> base32_encode("Hello World!")
 >>> base32_encode(b"Hello World!")
 b'JBSWY3DPEBLW64TMMQQQ===='
 >>> base32_encode("123456")
 >>> base32_encode(b"123456")
 b'GEZDGNBVGY======'
 >>> base32_encode("some long complex string")
 >>> base32_encode(b"some long complex string")
 b'ONXW2ZJANRXW4ZZAMNXW24DMMV4CA43UOJUW4ZY='
 """

 # encoded the input (we need a bytes like object)
 # then, b32encoded the bytes-like object
 return base64.b32encode(string.encode("utf-8"))
 binary_data = "".join(bin(ord(d))[2:].zfill(8) for d in data.decode("utf-8"))
 binary_data = binary_data.ljust(5 * ((len(binary_data) // 5) + 1), "0")
 b32_chunks = map("".join, zip(*[iter(binary_data)] * 5))
 b32_result = "".join(B32_CHARSET[int(chunk, 2)] for chunk in b32_chunks)
 return bytes(b32_result.ljust(8 * ((len(b32_result) // 8) + 1), "="), "utf-8")


def base32_decode(encoded_bytes: bytes) -> str:
def base32_decode(data: bytes) -> bytes:
 """
 Decodes a given bytes-like object to a string, returning a string
 >>> base32_decode(b'JBSWY3DPEBLW64TMMQQQ====')
 'Hello World!'
b'Hello World!'
 >>> base32_decode(b'GEZDGNBVGY======')
 '123456'
b'123456'
 >>> base32_decode(b'ONXW2ZJANRXW4ZZAMNXW24DMMV4CA43UOJUW4ZY=')
 'some long complex string'
b'some long complex string'
 """

 # decode the bytes from base32
 # then, decode the bytes-like object to return as a string
 return base64.b32decode(encoded_bytes).decode("utf-8")
 binary_chunks = "".join(
 bin(B32_CHARSET.index(_d))[2:].zfill(5)
 for _d in data.decode("utf-8").strip("=")
 )
 binary_data = list(map("".join, zip(*[iter(binary_chunks)] * 8)))
 return bytes("".join([chr(int(_d, 2)) for _d in binary_data]), "utf-8")


if __name__ == "__main__":
 test = "Hello World!"
 encoded = base32_encode(test)
 print(encoded)
 import doctest

 decoded = base32_decode(encoded)
 print(decoded)
 doctest.testmod()

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Rewrite of base32.py algorithm by chriso345 · Pull Request #9068 · TheAlgorithms/Python · GitHub
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Rewrite of base32.py algorithm#9068

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tianyizheng02
merged 4 commits into

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Sep 24, 2023
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Rewrite of base32.py algorithm
#9068
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597581c

rewrite of base32.py


chriso345 Sep 20, 2023
52e28e5

changed maps to list comprehension


chriso345 Sep 20, 2023
e7d70e1

Merge branch 'TheAlgorithms:master' into base32


chriso345 Sep 23, 2023
89e2c4b

Apply suggestions from code review


chriso345 Sep 24, 2023

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51 changes: 27 additions & 24 deletions
ciphers/base32.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,42 +1,45 @@
import base64
"""
Base32 encoding and decoding

https://en.wikipedia.org/wiki/Base32
"""
B32_CHARSET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"

def base32_encode(string: str) -> bytes:

def base32_encode(data: bytes) -> bytes:
 """
 Encodes a given string to base32, returning a bytes-like object
 >>> base32_encode("Hello World!")
 >>> base32_encode(b"Hello World!")
 b'JBSWY3DPEBLW64TMMQQQ===='
 >>> base32_encode("123456")
 >>> base32_encode(b"123456")
 b'GEZDGNBVGY======'
 >>> base32_encode("some long complex string")
 >>> base32_encode(b"some long complex string")
 b'ONXW2ZJANRXW4ZZAMNXW24DMMV4CA43UOJUW4ZY='
 """

 # encoded the input (we need a bytes like object)
 # then, b32encoded the bytes-like object
 return base64.b32encode(string.encode("utf-8"))
 binary_data = "".join(bin(ord(d))[2:].zfill(8) for d in data.decode("utf-8"))
 binary_data = binary_data.ljust(5 * ((len(binary_data) // 5) + 1), "0")
 b32_chunks = map("".join, zip(*[iter(binary_data)] * 5))
 b32_result = "".join(B32_CHARSET[int(chunk, 2)] for chunk in b32_chunks)
 return bytes(b32_result.ljust(8 * ((len(b32_result) // 8) + 1), "="), "utf-8")


def base32_decode(encoded_bytes: bytes) -> str:
def base32_decode(data: bytes) -> bytes:
 """
 Decodes a given bytes-like object to a string, returning a string
 >>> base32_decode(b'JBSWY3DPEBLW64TMMQQQ====')
 'Hello World!'
b'Hello World!'
 >>> base32_decode(b'GEZDGNBVGY======')
 '123456'
b'123456'
 >>> base32_decode(b'ONXW2ZJANRXW4ZZAMNXW24DMMV4CA43UOJUW4ZY=')
 'some long complex string'
b'some long complex string'
 """

 # decode the bytes from base32
 # then, decode the bytes-like object to return as a string
 return base64.b32decode(encoded_bytes).decode("utf-8")
 binary_chunks = "".join(
 bin(B32_CHARSET.index(_d))[2:].zfill(5)
 for _d in data.decode("utf-8").strip("=")
 )
 binary_data = list(map("".join, zip(*[iter(binary_chunks)] * 8)))
 return bytes("".join([chr(int(_d, 2)) for _d in binary_data]), "utf-8")


if __name__ == "__main__":
 test = "Hello World!"
 encoded = base32_encode(test)
 print(encoded)
 import doctest

 decoded = base32_decode(encoded)
 print(decoded)
 doctest.testmod()

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Rewrite of base32.py algorithm by chriso345 · Pull Request #9068 · TheAlgorithms/Python · GitHub
Skip to content
Rewrite of base32.py algorithm#9068

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 Merged

tianyizheng02
merged 4 commits into

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Sep 24, 2023
 Merged


Rewrite of base32.py algorithm
#9068
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597581c

rewrite of base32.py


chriso345 Sep 20, 2023
52e28e5

changed maps to list comprehension


chriso345 Sep 20, 2023
e7d70e1

Merge branch 'TheAlgorithms:master' into base32


chriso345 Sep 23, 2023
89e2c4b

Apply suggestions from code review


chriso345 Sep 24, 2023

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51 changes: 27 additions & 24 deletions
ciphers/base32.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,42 +1,45 @@
import base64
"""
Base32 encoding and decoding

https://en.wikipedia.org/wiki/Base32
"""
B32_CHARSET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"

def base32_encode(string: str) -> bytes:

def base32_encode(data: bytes) -> bytes:
 """
 Encodes a given string to base32, returning a bytes-like object
 >>> base32_encode("Hello World!")
 >>> base32_encode(b"Hello World!")
 b'JBSWY3DPEBLW64TMMQQQ===='
 >>> base32_encode("123456")
 >>> base32_encode(b"123456")
 b'GEZDGNBVGY======'
 >>> base32_encode("some long complex string")
 >>> base32_encode(b"some long complex string")
 b'ONXW2ZJANRXW4ZZAMNXW24DMMV4CA43UOJUW4ZY='
 """

 # encoded the input (we need a bytes like object)
 # then, b32encoded the bytes-like object
 return base64.b32encode(string.encode("utf-8"))
 binary_data = "".join(bin(ord(d))[2:].zfill(8) for d in data.decode("utf-8"))
 binary_data = binary_data.ljust(5 * ((len(binary_data) // 5) + 1), "0")
 b32_chunks = map("".join, zip(*[iter(binary_data)] * 5))
 b32_result = "".join(B32_CHARSET[int(chunk, 2)] for chunk in b32_chunks)
 return bytes(b32_result.ljust(8 * ((len(b32_result) // 8) + 1), "="), "utf-8")


def base32_decode(encoded_bytes: bytes) -> str:
def base32_decode(data: bytes) -> bytes:
 """
 Decodes a given bytes-like object to a string, returning a string
 >>> base32_decode(b'JBSWY3DPEBLW64TMMQQQ====')
 'Hello World!'
b'Hello World!'
 >>> base32_decode(b'GEZDGNBVGY======')
 '123456'
b'123456'
 >>> base32_decode(b'ONXW2ZJANRXW4ZZAMNXW24DMMV4CA43UOJUW4ZY=')
 'some long complex string'
b'some long complex string'
 """

 # decode the bytes from base32
 # then, decode the bytes-like object to return as a string
 return base64.b32decode(encoded_bytes).decode("utf-8")
 binary_chunks = "".join(
 bin(B32_CHARSET.index(_d))[2:].zfill(5)
 for _d in data.decode("utf-8").strip("=")
 )
 binary_data = list(map("".join, zip(*[iter(binary_chunks)] * 8)))
 return bytes("".join([chr(int(_d, 2)) for _d in binary_data]), "utf-8")


if __name__ == "__main__":
 test = "Hello World!"
 encoded = base32_encode(test)
 print(encoded)
 import doctest

 decoded = base32_decode(encoded)
 print(decoded)
 doctest.testmod()

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
Rewrite of base32.py algorithm by chriso345 · Pull Request #9068 · TheAlgorithms/Python · GitHub
Skip to content
Rewrite of base32.py algorithm#9068

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 Merged

tianyizheng02
merged 4 commits into

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Sep 24, 2023
 Merged


Rewrite of base32.py algorithm
#9068
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597581c

rewrite of base32.py


chriso345 Sep 20, 2023
52e28e5

changed maps to list comprehension


chriso345 Sep 20, 2023
e7d70e1

Merge branch 'TheAlgorithms:master' into base32


chriso345 Sep 23, 2023
89e2c4b

Apply suggestions from code review


chriso345 Sep 24, 2023

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51 changes: 27 additions & 24 deletions
ciphers/base32.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,42 +1,45 @@
import base64
"""
Base32 encoding and decoding

https://en.wikipedia.org/wiki/Base32
"""
B32_CHARSET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"

def base32_encode(string: str) -> bytes:

def base32_encode(data: bytes) -> bytes:
 """
 Encodes a given string to base32, returning a bytes-like object
 >>> base32_encode("Hello World!")
 >>> base32_encode(b"Hello World!")
 b'JBSWY3DPEBLW64TMMQQQ===='
 >>> base32_encode("123456")
 >>> base32_encode(b"123456")
 b'GEZDGNBVGY======'
 >>> base32_encode("some long complex string")
 >>> base32_encode(b"some long complex string")
 b'ONXW2ZJANRXW4ZZAMNXW24DMMV4CA43UOJUW4ZY='
 """

 # encoded the input (we need a bytes like object)
 # then, b32encoded the bytes-like object
 return base64.b32encode(string.encode("utf-8"))
 binary_data = "".join(bin(ord(d))[2:].zfill(8) for d in data.decode("utf-8"))
 binary_data = binary_data.ljust(5 * ((len(binary_data) // 5) + 1), "0")
 b32_chunks = map("".join, zip(*[iter(binary_data)] * 5))
 b32_result = "".join(B32_CHARSET[int(chunk, 2)] for chunk in b32_chunks)
 return bytes(b32_result.ljust(8 * ((len(b32_result) // 8) + 1), "="), "utf-8")


def base32_decode(encoded_bytes: bytes) -> str:
def base32_decode(data: bytes) -> bytes:
 """
 Decodes a given bytes-like object to a string, returning a string
 >>> base32_decode(b'JBSWY3DPEBLW64TMMQQQ====')
 'Hello World!'
b'Hello World!'
 >>> base32_decode(b'GEZDGNBVGY======')
 '123456'
b'123456'
 >>> base32_decode(b'ONXW2ZJANRXW4ZZAMNXW24DMMV4CA43UOJUW4ZY=')
 'some long complex string'
b'some long complex string'
 """

 # decode the bytes from base32
 # then, decode the bytes-like object to return as a string
 return base64.b32decode(encoded_bytes).decode("utf-8")
 binary_chunks = "".join(
 bin(B32_CHARSET.index(_d))[2:].zfill(5)
 for _d in data.decode("utf-8").strip("=")
 )
 binary_data = list(map("".join, zip(*[iter(binary_chunks)] * 8)))
 return bytes("".join([chr(int(_d, 2)) for _d in binary_data]), "utf-8")


if __name__ == "__main__":
 test = "Hello World!"
 encoded = base32_encode(test)
 print(encoded)
 import doctest

 decoded = base32_decode(encoded)
 print(decoded)
 doctest.testmod()

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Rewrite of base32.py algorithm by chriso345 · Pull Request #9068 · TheAlgorithms/Python · GitHub
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tianyizheng02
merged 4 commits into

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Sep 24, 2023
 Merged


Rewrite of base32.py algorithm
#9068
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597581c

rewrite of base32.py


chriso345 Sep 20, 2023
52e28e5

changed maps to list comprehension


chriso345 Sep 20, 2023
e7d70e1

Merge branch 'TheAlgorithms:master' into base32


chriso345 Sep 23, 2023
89e2c4b

Apply suggestions from code review


chriso345 Sep 24, 2023

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51 changes: 27 additions & 24 deletions
ciphers/base32.py

View file


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Original file line numberDiff line numberDiff line change
@@ -1,42 +1,45 @@
import base64
"""
Base32 encoding and decoding

https://en.wikipedia.org/wiki/Base32
"""
B32_CHARSET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"

def base32_encode(string: str) -> bytes:

def base32_encode(data: bytes) -> bytes:
 """
 Encodes a given string to base32, returning a bytes-like object
 >>> base32_encode("Hello World!")
 >>> base32_encode(b"Hello World!")
 b'JBSWY3DPEBLW64TMMQQQ===='
 >>> base32_encode("123456")
 >>> base32_encode(b"123456")
 b'GEZDGNBVGY======'
 >>> base32_encode("some long complex string")
 >>> base32_encode(b"some long complex string")
 b'ONXW2ZJANRXW4ZZAMNXW24DMMV4CA43UOJUW4ZY='
 """

 # encoded the input (we need a bytes like object)
 # then, b32encoded the bytes-like object
 return base64.b32encode(string.encode("utf-8"))
 binary_data = "".join(bin(ord(d))[2:].zfill(8) for d in data.decode("utf-8"))
 binary_data = binary_data.ljust(5 * ((len(binary_data) // 5) + 1), "0")
 b32_chunks = map("".join, zip(*[iter(binary_data)] * 5))
 b32_result = "".join(B32_CHARSET[int(chunk, 2)] for chunk in b32_chunks)
 return bytes(b32_result.ljust(8 * ((len(b32_result) // 8) + 1), "="), "utf-8")


def base32_decode(encoded_bytes: bytes) -> str:
def base32_decode(data: bytes) -> bytes:
 """
 Decodes a given bytes-like object to a string, returning a string
 >>> base32_decode(b'JBSWY3DPEBLW64TMMQQQ====')
 'Hello World!'
b'Hello World!'
 >>> base32_decode(b'GEZDGNBVGY======')
 '123456'
b'123456'
 >>> base32_decode(b'ONXW2ZJANRXW4ZZAMNXW24DMMV4CA43UOJUW4ZY=')
 'some long complex string'
b'some long complex string'
 """

 # decode the bytes from base32
 # then, decode the bytes-like object to return as a string
 return base64.b32decode(encoded_bytes).decode("utf-8")
 binary_chunks = "".join(
 bin(B32_CHARSET.index(_d))[2:].zfill(5)
 for _d in data.decode("utf-8").strip("=")
 )
 binary_data = list(map("".join, zip(*[iter(binary_chunks)] * 8)))
 return bytes("".join([chr(int(_d, 2)) for _d in binary_data]), "utf-8")


if __name__ == "__main__":
 test = "Hello World!"
 encoded = base32_encode(test)
 print(encoded)
 import doctest

 decoded = base32_decode(encoded)
 print(decoded)
 doctest.testmod()

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
})();
Rewrite of base32.py algorithm by chriso345 · Pull Request #9068 · TheAlgorithms/Python · GitHub
Skip to content
Rewrite of base32.py algorithm#9068

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 Merged

tianyizheng02
merged 4 commits into

from

Sep 24, 2023
 Merged


Rewrite of base32.py algorithm
#9068
 Changes from all commits
Commits

Show all changes


4 commits


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Hold shift + click to select a range
597581c

rewrite of base32.py


chriso345 Sep 20, 2023
52e28e5

changed maps to list comprehension


chriso345 Sep 20, 2023
e7d70e1

Merge branch 'TheAlgorithms:master' into base32


chriso345 Sep 23, 2023
89e2c4b

Apply suggestions from code review


chriso345 Sep 24, 2023

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51 changes: 27 additions & 24 deletions
ciphers/base32.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,42 +1,45 @@
import base64
"""
Base32 encoding and decoding

https://en.wikipedia.org/wiki/Base32
"""
B32_CHARSET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"

def base32_encode(string: str) -> bytes:

def base32_encode(data: bytes) -> bytes:
 """
 Encodes a given string to base32, returning a bytes-like object
 >>> base32_encode("Hello World!")
 >>> base32_encode(b"Hello World!")
 b'JBSWY3DPEBLW64TMMQQQ===='
 >>> base32_encode("123456")
 >>> base32_encode(b"123456")
 b'GEZDGNBVGY======'
 >>> base32_encode("some long complex string")
 >>> base32_encode(b"some long complex string")
 b'ONXW2ZJANRXW4ZZAMNXW24DMMV4CA43UOJUW4ZY='
 """

 # encoded the input (we need a bytes like object)
 # then, b32encoded the bytes-like object
 return base64.b32encode(string.encode("utf-8"))
 binary_data = "".join(bin(ord(d))[2:].zfill(8) for d in data.decode("utf-8"))
 binary_data = binary_data.ljust(5 * ((len(binary_data) // 5) + 1), "0")
 b32_chunks = map("".join, zip(*[iter(binary_data)] * 5))
 b32_result = "".join(B32_CHARSET[int(chunk, 2)] for chunk in b32_chunks)
 return bytes(b32_result.ljust(8 * ((len(b32_result) // 8) + 1), "="), "utf-8")


def base32_decode(encoded_bytes: bytes) -> str:
def base32_decode(data: bytes) -> bytes:
 """
 Decodes a given bytes-like object to a string, returning a string
 >>> base32_decode(b'JBSWY3DPEBLW64TMMQQQ====')
 'Hello World!'
b'Hello World!'
 >>> base32_decode(b'GEZDGNBVGY======')
 '123456'
b'123456'
 >>> base32_decode(b'ONXW2ZJANRXW4ZZAMNXW24DMMV4CA43UOJUW4ZY=')
 'some long complex string'
b'some long complex string'
 """

 # decode the bytes from base32
 # then, decode the bytes-like object to return as a string
 return base64.b32decode(encoded_bytes).decode("utf-8")
 binary_chunks = "".join(
 bin(B32_CHARSET.index(_d))[2:].zfill(5)
 for _d in data.decode("utf-8").strip("=")
 )
 binary_data = list(map("".join, zip(*[iter(binary_chunks)] * 8)))
 return bytes("".join([chr(int(_d, 2)) for _d in binary_data]), "utf-8")


if __name__ == "__main__":
 test = "Hello World!"
 encoded = base32_encode(test)
 print(encoded)
 import doctest

 decoded = base32_decode(encoded)
 print(decoded)
 doctest.testmod()