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Clarify Differences From Base64 Encoding #102

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Clarify Differences From Base64 Encoding #102

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12 changes: 6 additions & 6 deletions Core/Consent String Specification.md
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Original file line number Diff line number Diff line change
Expand Up @@ -199,9 +199,9 @@ The following details provide information on creating, storing, and managing a G
<li><b>Concatenate all sections.</b> Concatenate the encoded GPP header as the first item to the encoded versions of the discrete sections using “~” (tilde) as the delimiter. See examples of GPP strings below.</li>
</ol>

Note that neither the header nor the recommended encoding mechanism for a discrete section utilizes base64 encoding but rather a modified version of it.
Note that the header and the recommended encoding algorithm for discrete sections utilize a modified version of base64 url safe encoding which omits byte alignment. This modification adapts base64 byte encoding to GPP bit encoding. For example, the GPP header `DBABM` decodes to the 30 bit sequence `000011000001000000000001001100` but cannot be decoded with the standard base64 algorithm.

#### Table from RFC 4648
#### Base 64 URL Encoding Table from RFC 4648
<div>
<table>
<tbody>
Expand Down Expand Up @@ -333,7 +333,7 @@ Note that neither the header nor the recommended encoding mechanism for a discre
<td>45</td>
<td>t</td>
<td>62</td>
<td>+</td>
<td>-</td>
</tr>
<tr>
<td>12</td>
Expand All @@ -343,7 +343,7 @@ Note that neither the header nor the recommended encoding mechanism for a discre
<td>46</td>
<td>u</td>
<td>63</td>
<td>/</td>
<td>_</td>
</tr>
<tr>
<td>13</td>
Expand All @@ -362,8 +362,8 @@ Note that neither the header nor the recommended encoding mechanism for a discre
<td>f</td>
<td>48</td>
<td>w</td>
<td>(pad)</td>
<td>=</td>
<td></td>
<td></td>
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GPP encoding does not use padding characters. Omitted from the table.

</tr>
<tr>
<td>15</td>
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