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Similar blocks of code found in 4 locations. Consider refactoring.
Open

    AlogTable = [
      1,   3,   5,  15,  17,  51,  85, 255,  26,  46, 114, 150, 161, 248,  19,  53,
     95, 225,  56,  72, 216, 115, 149, 164, 247,   2,   6,  10,  30,  34, 102, 170,
    229,  52,  92, 228,  55,  89, 235,  38, 106, 190, 217, 112, 144, 171, 230,  49,
     83, 245,   4,  12,  20,  60,  68, 204,  79, 209, 104, 184, 211, 110, 178, 205,
Severity: Major
Found in lib/crypt/rijndael-tables.rb and 3 other locations - About 1 day to fix
lib/crypt/rijndael-tables.rb on lines 5..22
lib/crypt/rijndael-tables.rb on lines 43..60
lib/crypt/rijndael-tables.rb on lines 62..79

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 258.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 4 locations. Consider refactoring.
Open

    S = [
     99, 124, 119, 123, 242, 107, 111, 197,  48,   1, 103,  43, 254, 215, 171, 118,
    202, 130, 201, 125, 250,  89,  71, 240, 173, 212, 162, 175, 156, 164, 114, 192,
    183, 253, 147,  38,  54,  63, 247, 204,  52, 165, 229, 241, 113, 216,  49,  21,
      4, 199,  35, 195,  24, 150,   5, 154,   7,  18, 128, 226, 235,  39, 178, 117,
Severity: Major
Found in lib/crypt/rijndael-tables.rb and 3 other locations - About 1 day to fix
lib/crypt/rijndael-tables.rb on lines 5..22
lib/crypt/rijndael-tables.rb on lines 24..41
lib/crypt/rijndael-tables.rb on lines 62..79

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 258.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 4 locations. Consider refactoring.
Open

    LogTable = [
      0,   0,  25,   1,  50,   2,  26, 198,  75, 199,  27, 104,  51, 238, 223,   3,
    100,   4, 224,  14,  52, 141, 129, 239,  76, 113,   8, 200, 248, 105,  28, 193,
    125, 194,  29, 181, 249, 185,  39, 106,  77, 228, 166, 114, 154, 201,   9, 120,
    101,  47, 138,   5,  33,  15, 225,  36,  18, 240, 130,  69,  53, 147, 218, 142,
Severity: Major
Found in lib/crypt/rijndael-tables.rb and 3 other locations - About 1 day to fix
lib/crypt/rijndael-tables.rb on lines 24..41
lib/crypt/rijndael-tables.rb on lines 43..60
lib/crypt/rijndael-tables.rb on lines 62..79

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 258.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 4 locations. Consider refactoring.
Open

    Si = [
     82,   9, 106, 213,  48,  54, 165,  56, 191,  64, 163, 158, 129, 243, 215, 251,
    124, 227,  57, 130, 155,  47, 255, 135,  52, 142,  67,  68, 196, 222, 233, 203,
     84, 123, 148,  50, 166, 194,  35,  61, 238,  76, 149,  11,  66, 250, 195,  78,
      8,  46, 161, 102,  40, 217,  36, 178, 118,  91, 162,  73, 109, 139, 209,  37,
Severity: Major
Found in lib/crypt/rijndael-tables.rb and 3 other locations - About 1 day to fix
lib/crypt/rijndael-tables.rb on lines 5..22
lib/crypt/rijndael-tables.rb on lines 24..41
lib/crypt/rijndael-tables.rb on lines 43..60

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 258.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Method generate_key_schedule has 50 lines of code (exceeds 25 allowed). Consider refactoring.
Open

    def generate_key_schedule(k, key_bits, block_bits)
      tk = k[0..3][0..@key_words-1]  # using slice to get a copy instead of a reference
      key_sched = []
      (@rounds + 1).times { key_sched << [[], [], [], []] }
      t = 0
Severity: Minor
Found in lib/crypt/rijndael.rb - About 2 hrs to fix

    Method add_noise has 49 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

        def add_noise(new_length)
      message = self
      usable_noisy_message_length = new_length / 9 * 8
      bitmap_size = new_length / 9
      remaining_bytes = new_length - usable_noisy_message_length - bitmap_size
    Severity: Minor
    Found in lib/crypt/noise.rb - About 1 hr to fix

      Similar blocks of code found in 2 locations. Consider refactoring.
      Open

            3.times {
        xr ^= f(xl+@key[0])
        xl ^= f(xr+@key[1])
        xr ^= f(xl+@key[2])
        xl ^= f(xr+@key[3])
      Severity: Major
      Found in lib/crypt/gost.rb and 1 other location - About 1 hr to fix
      lib/crypt/gost.rb on lines 112..121

      Duplicated Code

      Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

      Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

      When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

      Tuning

      This issue has a mass of 76.

      We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

      The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

      If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

      See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

      Refactorings

      Further Reading

      Similar blocks of code found in 2 locations. Consider refactoring.
      Open

            3.times {
        xr ^= f(xl+@key[7])
        xl ^= f(xr+@key[6])
        xr ^= f(xl+@key[5])
        xl ^= f(xr+@key[4])
      Severity: Major
      Found in lib/crypt/gost.rb and 1 other location - About 1 hr to fix
      lib/crypt/gost.rb on lines 81..90

      Duplicated Code

      Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

      Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

      When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

      Tuning

      This issue has a mass of 76.

      We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

      The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

      If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

      See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

      Refactorings

      Further Reading

      Method initialize has 46 lines of code (exceeds 25 allowed). Consider refactoring.
      Open

          def initialize(user_key, key_bits = 256, block_bits = 128)
      case key_bits
        when 128
          @key_words = 4
        when 192
      Severity: Minor
      Found in lib/crypt/rijndael.rb - About 1 hr to fix

        Similar blocks of code found in 2 locations. Consider refactoring.
        Open

            def decrypt_block(block)
      raise "block must be #{@block_size} bytes long" if (block.length() != @block_size)
      block_array = [[], [], [], []]
      block_bytes = block.bytes.to_a
      0.upto(@block_size - 1) { |pos|
        Severity: Major
        Found in lib/crypt/rijndael.rb and 1 other location - About 1 hr to fix
        lib/crypt/rijndael.rb on lines 219..231

        Duplicated Code

        Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

        Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

        When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

        Tuning

        This issue has a mass of 66.

        We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

        The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

        If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

        See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

        Refactorings

        Further Reading

        Similar blocks of code found in 2 locations. Consider refactoring.
        Open

            def encrypt_block(block)
      raise "block must be #{@block_size} bytes long" if (block.length() != @block_size)
      block_array = [[], [], [], []]
      block_bytes = block.bytes.to_a
      0.upto(@block_size - 1) { |pos|
        Severity: Major
        Found in lib/crypt/rijndael.rb and 1 other location - About 1 hr to fix
        lib/crypt/rijndael.rb on lines 252..264

        Duplicated Code

        Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

        Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

        When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

        Tuning

        This issue has a mass of 66.

        We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

        The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

        If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

        See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

        Refactorings

        Further Reading

        Method add_noise has a Cognitive Complexity of 12 (exceeds 5 allowed). Consider refactoring.
        Open

            def add_noise(new_length)
      message = self
      usable_noisy_message_length = new_length / 9 * 8
      bitmap_size = new_length / 9
      remaining_bytes = new_length - usable_noisy_message_length - bitmap_size
        Severity: Minor
        Found in lib/crypt/noise.rb - About 1 hr to fix

        Cognitive Complexity

        Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

        A method's cognitive complexity is based on a few simple rules:

        • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
        • Code is considered more complex for each "break in the linear flow of the code"
        • Code is considered more complex when "flow breaking structures are nested"

        Further reading

        Similar blocks of code found in 2 locations. Consider refactoring.
        Open

            def encrypt_pair(xl, xr)
      0.upto(15) { |i|
          xl = (xl ^ @p_array[i]) % ULONG
          xr = (xr ^ f(xl)) % ULONG
          xl, xr = xr, xl
        Severity: Major
        Found in lib/crypt/blowfish.rb and 1 other location - About 1 hr to fix
        lib/crypt/blowfish.rb on lines 84..93

        Duplicated Code

        Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

        Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

        When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

        Tuning

        This issue has a mass of 57.

        We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

        The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

        If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

        See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

        Refactorings

        Further Reading

        Similar blocks of code found in 2 locations. Consider refactoring.
        Open

            def decrypt_pair(xl, xr)
      17.downto(2) { |i|
          xl = (xl ^ @p_array[i]) % ULONG
          xr = (xr ^ f(xl)) % ULONG
          xl, xr = xr, xl
        Severity: Major
        Found in lib/crypt/blowfish.rb and 1 other location - About 1 hr to fix
        lib/crypt/blowfish.rb on lines 71..80

        Duplicated Code

        Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

        Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

        When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

        Tuning

        This issue has a mass of 57.

        We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

        The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

        If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

        See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

        Refactorings

        Further Reading

        Method generate_key_schedule has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.
        Open

            def generate_key_schedule(k, key_bits, block_bits)
      tk = k[0..3][0..@key_words-1]  # using slice to get a copy instead of a reference
      key_sched = []
      (@rounds + 1).times { key_sched << [[], [], [], []] }
      t = 0
        Severity: Minor
        Found in lib/crypt/rijndael.rb - About 55 mins to fix

        Cognitive Complexity

        Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

        A method's cognitive complexity is based on a few simple rules:

        • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
        • Code is considered more complex for each "break in the linear flow of the code"
        • Code is considered more complex when "flow breaking structures are nested"

        Further reading

        Identical blocks of code found in 2 locations. Consider refactoring.
        Open

              while ((j < @key_words) && (t < (@rounds+1)*@block_words))
        0.upto(3) { |i|
          key_sched[t / @block_words][i][t % @block_words] = tk[i][j]
        }
        j += 1
        Severity: Minor
        Found in lib/crypt/rijndael.rb and 1 other location - About 50 mins to fix
        lib/crypt/rijndael.rb on lines 191..197

        Duplicated Code

        Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

        Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

        When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

        Tuning

        This issue has a mass of 42.

        We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

        The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

        If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

        See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

        Refactorings

        Further Reading

        Identical blocks of code found in 2 locations. Consider refactoring.
        Open

                while ((j < @key_words) && (t < (@rounds+1) * @block_words))
          0.upto(3) { |i|
            key_sched[t / @block_words][i][t % @block_words] = tk[i][j]
          }
          j += 1
        Severity: Minor
        Found in lib/crypt/rijndael.rb and 1 other location - About 50 mins to fix
        lib/crypt/rijndael.rb on lines 154..160

        Duplicated Code

        Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

        Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

        When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

        Tuning

        This issue has a mass of 42.

        We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

        The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

        If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

        See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

        Refactorings

        Further Reading

        Method initialize has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.
        Open

            def initialize(key128, mode)
      # IDEA is subject to attack unless the key is sufficiently random, so we
      # take an MD5 digest of a variable-length passphrase to ensure a solid key
      if (key128.class == String)
        digest = Digest::MD5.digest(key128)
        Severity: Minor
        Found in lib/crypt/idea.rb - About 45 mins to fix

        Cognitive Complexity

        Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

        A method's cognitive complexity is based on a few simple rules:

        • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
        • Code is considered more complex for each "break in the linear flow of the code"
        • Code is considered more complex when "flow breaking structures are nested"

        Further reading

        Method initialize has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
        Open

            def initialize(user_key, key_bits = 256, block_bits = 128)
      case key_bits
        when 128
          @key_words = 4
        when 192
        Severity: Minor
        Found in lib/crypt/rijndael.rb - About 35 mins to fix

        Cognitive Complexity

        Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

        A method's cognitive complexity is based on a few simple rules:

        • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
        • Code is considered more complex for each "break in the linear flow of the code"
        • Code is considered more complex when "flow breaking structures are nested"

        Further reading

        Method generate_encryption_subkeys has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
        Open

            def generate_encryption_subkeys(key)
      encrypt_keys = []
      encrypt_keys[0..7] = key.dup
      8.upto(51) { |i|
        a = ((i + 1) % 8 > 0) ? (i-7)  : (i-15)
        Severity: Minor
        Found in lib/crypt/idea.rb - About 25 mins to fix

        Cognitive Complexity

        Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

        A method's cognitive complexity is based on a few simple rules:

        • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
        • Code is considered more complex for each "break in the linear flow of the code"
        • Code is considered more complex when "flow breaking structures are nested"

        Further reading

        Severity
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